Uniting Particles To Form Continuous Coating With Nondiscernible Particles Patents (Class 427/189)
  • Patent number: 5942298
    Abstract: A laminated film comprising a base film and a layer which contains an inorganic layered compound and a resin and is formed by gravure coating a coating fluid comprising the inorganic layered compound and the resin under the conditions satisfying the following equation:7<log?2((G/B).times.100).sup.2 .times.(B+G).sup.2 .times.(GM)!<13wherein G is a rotational speed of a gravure roll (m/min.), B is a rotational speed of a backing roll (m/min.) and GM is a mesh number of a gravure roll, which film has good transparency and gas barrier properties.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: August 24, 1999
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Taiichi Sakaya, Toshiya Kuroda
  • Patent number: 5922473
    Abstract: Opaquely pigmented or thick filmed powder coatings for heat sensitive substrates, such as wood, wood composites, for example, medium density fiber board, and plastics, that can be fully cured, especially near the substrate, through the incorporation of a dual cure system in the powder comprising a thermal initiator, such as a peroxide, along with a UV initiator. The UV initiator cures the surface, while the thermal initiator cures at the substrate. Surprisingly, virtually no pregelation occurs during the heated melt and flow out step prior to UV curing. Consequently, the hardened film finish formed on the surface exhibits exceptional smoothness which is comparable to that of traditional UV curable powders. The hardened film finish is also fully cured throughout and exhibits exceptional adhesion to the substrate which cannot be achieved with traditional UV curable powders that have been pigmented.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: July 13, 1999
    Assignee: Morton International, Inc.
    Inventors: Jeno Muthiah, Andrew T. Daly, Richard P. Haley, Joseph J. Kozlowski
  • Patent number: 5897948
    Abstract: A surface-treated steel sheet with a resin-based chemical treatment coating on the steel sheet surface, having poorly soluble chromate colloid particles finely dispersed in a matrix resin such that the mean particle size of the dispersed particles is under 1 .mu.m.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: April 27, 1999
    Assignee: Nippon Steel Corporation
    Inventors: Tadashi Sakon, Ikuo Jitsuhara, Kenichiro Tadokoro, Maki Sekoguchi, Hiromasa Shoji, Makoto Yamazaki
  • Patent number: 5891516
    Abstract: Fiber cement felts of the present invention include: a top fabric layer that includes fine machine direction yarns and fine cross machine direction yarns interwoven with the fine machine direction yarns; a bottom fabric layer underlying the top fabric layer that includes coarse machine direction yarns and coarse cross machine direction yarns interwoven with the coarse machine direction yarns; and a batt layer attached to and overlying the top fabric layer. Preferably, the top fabric layer is heat bonded to the bottom fabric layer. It is also preferred that the fiber cement felt of the present invention include a second batt layer that underlies the bottom fabric layer. In this multiple layer structure, the felt can have higher tenacity, improved resistance to blinding and compaction, and a reduced tendency to mark a fiber cement sheet during its formation.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: April 6, 1999
    Assignee: Weavexx Corporation
    Inventors: Hippolit Gstrein, Oswald Breit
  • Patent number: 5879751
    Abstract: A method and apparatus is disclosed for making absorbent structures having a layer of discrete particulate absorbent material which is divided into two or more bands separated by a substantially particulate-free zone. The method of making such absorbent structures comprises the steps of first generating an initial particle suspension comprising a two-phase fluid of particles of absorbent gelling material suspended in a gas (such as air) flowing in an inlet duct. The initial particle suspension is then divided into multiple final particle suspensions in corresponding multiple branch ducts, each of the final particle suspensions having a given percentage of particles as a function of cross-sectional area of the inlet duct. The particles in the final particle suspensions are substantially uniformly distributed as a function of cross-sectional position in the branch ducts. Finally, the suspended particles are filtered from the final particle suspensions by capturing them on a substrate such as a layer of tissue.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: March 9, 1999
    Assignee: The Procter & Gamble Company
    Inventor: Michael Scott Bogdanski
  • Patent number: 5834673
    Abstract: The present invention relates to a method of applying a wear protection substance to the inside of metal cases used for ammunition. The wear protection substance comprises a composition of wax and a solid particle component which has a known barrel wear reducing effect. The wear protection substance is either applied in molten form to the inside of the metal case or is applied in solid form to the inside of the metal case and then melted. The wear protection substance is then spread to form a layer over the inside of the metal case. The metal case is then cooled whereby a solid coating is formed on the insides of the metal case.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: November 10, 1998
    Assignee: Bofors AB
    Inventors: Lennart Gustavsson, Dennis Taylor
  • Patent number: 5728423
    Abstract: A process and apparatus for internally and externally coating enclosed structures with polymeric materials are provided. In general, the process includes loading a polymeric material into the interior of an enclosed structure. The enclosed structure is then heated and rotated until a polymeric lining is formed within the structure. A second coat of polymeric material may be applied to the exterior surface of the enclosed structure while the enclosed structure is at a temperature sufficient to melt the polymeric material. The enclosed structure can include tanks, drums, barrels, pipes, and the like. In one embodiment, an apparatus having a plurality of arms is used to rotate the enclosed structures between stations corresponding to different steps in the process. The apparatus can include a cooling system for cooling the arms during operation.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: March 17, 1998
    Inventor: L. Keith Rogerson
  • Patent number: 5720736
    Abstract: An absorbent material is provided which enjoys suppleness, possesses highly satisfactory absorption qualities (speed of absorption and capacity for absorption), allows section into pieces of desired size and shape, and excels in safety.An absorbent material comprising 100 parts by weight of absorbent resin particles and 15 to 150 parts by weight of water, which absorbent material is in the form of a sheet having a thickness in the approximate range of 0.3 to 5 mm, the form of a sheet resulting from mutual adhesion of the absorbent resin particles.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: February 24, 1998
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Takumi Hatsuda, Kazumasa Konishi
  • Patent number: 5683747
    Abstract: Carbon fiber mat are embedded in a coating by first rolling on a coating of e.g. epoxy on the floor or wall, then applying sheets of fine carbon fibers, (optionally) removing the carbon fiber which is not adherent after the coating has dried, then applying one or more additional top coats of coating to additionally embed the carbon fibers. The result is an electrically conductive floor and/or wall coating system useful in antistatic rooms such as clean rooms, operating rooms, etc. Coatings can be sol vent based or waterborne urethanes, epoxies, alkyds, polyethylenes, acrylics, vinyls, vinyl acetates, esters, polyesters, sulfones, polysulfones, silicones, polysilicones and others. The preferred mats are carbon fiber "veils" or "paper" generally having a density of about 0.75 oz./square yard.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: November 4, 1997
    Assignee: Ashland Oil, Inc.
    Inventor: Ray C. Hamon
  • Patent number: 5674554
    Abstract: A method for forming a layer of particles on a substrate, such as a layer of phosphor particles on the inside of a CRT, is described. The depends on the use of a double-sided adhesive tape comprising a laminate of a dry adhesive between two protective layers. One of the protective layers is stripped away to expose one surface of the dry adhesive layer which is then pressed up against the substrate surface using a method such as rolling or autoclaving to bring about bubble-free adhesion. The other protective layer is then stripped away, thereby exposing the other surface of the adhesive layer. The particles that will comprise the final layer are then applied to the exposed adhesive surface by means of dusting. This is followed by the removal of any weakly adhering particles from the final particle layer. Finally, the dry adhesive layer is itself removed by means of a heat treatment, leaving in place a uniform layer of particles adhering to the substrate surface.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: October 7, 1997
    Assignee: Industrial Technology Research Institute
    Inventors: Nan-chou David Liu, Jin-Yuh Lu, Lyuji Ozawa
  • Patent number: 5654042
    Abstract: A powder coating system for difficult to handle powders includes a powder hopper containing fluidized powder particles, a pump body connected to the hopper and having an inlet in communication with the hopper, an ejector nozzle mounted to the pump body and aimed at an outlet thereof, a second nozzle mounted to the pump body and aimed at the inlet thereof and a powder application device for receiving powder particles from the outlet of the pump body and spraying them onto an article to be coated. The ejector nozzle sprays pressurized air toward the outlet to transport powder particles along a flow path which extends from the powder hopper into the pump body via the inlet and then out of the pump body via the outlet. The second nozzle sprays air pulses at the inlet in a direction opposite the particle flow along the flow path caused by the ejector nozzle. This spray from the second nozzle creates microvibrations in the inlet of the pump body to eliminate powder particle adherence and cohesion thereat.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: Nordson Corporation
    Inventors: Takashi Watanabe, Kenichi Masuda, Shigeki Kasahara, Masashi Sakurazawa
  • Patent number: 5637197
    Abstract: A suspension of bacterial cellulose having a reticulated structure has been conditioned to remain in suspension when the suspension is under shear so that it may be coated on a substrate. The suspension of bacterial cellulose is homogenized and thereafter filtered to provide a bacterial cellulose component having a size no greater than 125 microns. This allows a process for applying bacterial cellulose as a coating on a substrate on a substantially continuous basis, either by roll coating or spraying. It also provides a coated product in which the bacterial cellulose is substantially uniform, taking into account the normal discontinuities of roll coating and spray coating.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: June 10, 1997
    Assignee: Monsanto Company
    Inventors: Walter D. Watt, Terry N. Adams, Gary D. Peterson, R. Scott Stephens, James M. Askew
  • Patent number: 5622750
    Abstract: A new method for the manufacture of glass films on substrates involves the flame reaction of an aerosol comprised of droplets of a solution containing all the precursors for the glass. A solution containing the precursors for all oxide components is atomized, and the resulting droplets are reacted in a flame to form spherical glass particles which are deposited on a heated substrate. By moving the substrate through the flame, a homogeneous deposit is achieved. Subsequent heat treatment in a furnace sinters the porous particle layer into a clear glass. The method has been successfully employed for the formation of sodium borosilicate glass films on silicon substrates and rare earth-doped multicomponent glass films for active devices.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: April 22, 1997
    Assignee: Lucent Technologies Inc.
    Inventors: Arnd H. Kilian, John B. MacChesney, Theodore F. Morse
  • Patent number: 5612099
    Abstract: A method and apparatus for coating the surface of a substrate suspends a coating material above the surface of the substrate and irradiates both the coating material and the underlying surface of the substrate. By irradiating both the coating material and the underlying surface of the substrate, a first portion of the coating material is melted to form an at least partially molten droplet of coating material. In addition, at least a second portion of the coating material is ablated to thereby create an ablation plume which propels the at least partially molten droplet of coating material toward the substrate. In addition, the portion of the substrate toward which the at least partially molten droplet of coating material is propelled is simultaneously heated, such that the at least partially molten droplet coating material adheres to the heated substrate, thereby coating the surface of the substrate.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: March 18, 1997
    Assignee: McDonnell Douglas Corporation
    Inventor: Stephen L. Thaler
  • Patent number: 5609708
    Abstract: A packing material having a resilient core and a uniform non-seamed exterior surface comprising a plurality of discrete compressible particles attached to the flexible core and to each other, the particles being compressed after attachment. The method comprises surrounding the flexible elongate core with a plurality of powder-like particles which together feed through a plurality of aligned pairs of feed groove rollers. The core, with the attached particles, wraps under tension around an arcuate sector of a cylinder or wheel passing between a pair of spaced-apart walls. A roller pushes against the core to compress the powder particles together and to bias the length of packing material into a spiral coil.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: March 11, 1997
    Inventors: Steven M. Suggs, Reid M. Meyer
  • Patent number: 5607730
    Abstract: A novel method of applying paints and other coatings is disclosed which can be carried out by forcibly inserting a cloud of coating particles carried by at least one inert gas into a laser beam attenuated by defocusing. At least one of the inert gases serves as a shield against combustion and can be directed downwardly in addition to a sideway spreading and spraying action. The pressure of the inert gas pushes the particles down onto the substrate. As soon as the particles are energized by the laser beam, they melt and begin to flow while at that exact instant, the coating particles come into contact with the substrate to avoid any possible dissipation of the laser energy. The coating material compositions can be altered by increasing the melting time of the particles even though a short melting time is preferred for achieving a fast coating process.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: March 4, 1997
    Assignee: Clover Industries, Inc.
    Inventor: Ronald J. Ranalli
  • Patent number: 5593726
    Abstract: A method of producing a wear or corrosion resistant coating by forming a coating of grains of hard metallic alloys bonded with an organic binder. The coating is applied to a substrate, heated so that the binder decomposes and then isostatically hot pressed. No liquid phase is formed in the coating during the process.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: January 14, 1997
    Assignee: APV Corporation Limited
    Inventors: John R. Nicholls, David J. Stephenson, Geoffrey F. Archer
  • Patent number: 5560768
    Abstract: Preparation of an encapsulated slow-release particulate fertilizer. A particulate fertilizer starting material is pretreated for increasing its capacity of holding powderous material by adhesion. The resulting first intermediary product is coated with a powderous waterproofing material which fuses below the phase transition temperature of the fertilizer. A second intermediary product obtained in this way is heated to a temperature below the phase transition temperature to fuse the waterproofing material.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: October 1, 1996
    Assignee: Haifa Chemicals South Ltd.
    Inventors: Boris Gordonov, Abraham Shaviv, Evgeny Zlotnikov, Uri Michael
  • Patent number: 5547822
    Abstract: Disclosed is a process for producing a titanium dioxide pigment used for a resin-coated paper type photographic support, comprising the following steps:(a) a step of adding at least one alkaline earth metal compound in an amount of 0.01-2.0% by weight in terms of a metal oxide based on the titanium dioxide before calcination step and(b) an acid-washing step of washing the titanium dioxide at acidic state after the calcination step and before a step of surface treatment with a hydrated metal oxide,and wherein particle size of the titanium dioxide pigment is 0.110-0.150 .mu.m shown by number-average diameter obtained by measuring the diameter in a certain direction using an electron microscope. A photographic support which comprises the above titanium dioxide pigment is also disclosed. Occurrence of die lip stain and microgrit are substantially reduced in the photographic support and a photographic material made thereof exhibits improved image sharpness.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: August 20, 1996
    Assignees: Mitsubishi Paper Mills, Tohkam Products
    Inventors: Touru Noda, Akira Uno, Kazuyoshi Muraoka
  • Patent number: 5518761
    Abstract: An absorbent material is provided which enjoys suppleness, possesses highly satisfactory absorption qualities (speed of absorption and capacity for absorption), allows section into pieces of desired size and shape, and excels in safety.An absorbent material comprising 100 parts by weight of absorbent resin particles and 15 to 150 parts by weight of water, which absorbent material is in the form of a sheet having a thickness in the approximate range of 0.3 to 5 mm, the form of a sheet resulting from mutual adhesion of the absorbent resin particles.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 21, 1996
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Takumi Hatsuda, Kazumasa Konishi
  • Patent number: 5468650
    Abstract: A histamine diagnostic assay device is provided in which glass microfibers treated with a polar organic polymer are deposited onto a carrier and used to selectively bind histamine in a sample. The polar organic polymer reduces the affinity of the glass microfibers for interfering components of the sample while substantially retaining the histamine-binding capacity. Preferably, the glass microfibers are provided as a conglomerate with the polar organic polymer. An agent which induces the release of histamine from cells in the sample may be included in the device.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: November 21, 1995
    Assignee: A/S Lundbeck Export Division Ltd.
    Inventors: Per Stahl Skov, Ole-Christian Bjarno
  • Patent number: 5462596
    Abstract: An apparatus for the distribution of pulverulent solids suspended in a gas on a moving substrate, particularly a ribbon of glass, has two walls defining a strip-like cavity positioned transversely to the substrate travel direction and ending in the vicinity of the substrate in a distribution slot. The cavity is provided with at least one partition positioned so as to longitudinally compartmentalize it, each of the compartments being coupled with pulverulent solid injectors and pressurized gas injectors.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: October 31, 1995
    Assignee: Saint-Gobain Vitrage International
    Inventors: Alain Arnaud, Claude Morin
  • Patent number: 5418056
    Abstract: A polymer composite includes a thermoplastic plastic polymer having a fine grain metal or metal oxide dispersed therein. Preferably, the fine grains has a size of about 1,000 nm or less. A method of making the polymer composite by adhering a metal layer to a thermoplastic polymer layer in a thermodynamically nonequilibrated condition followed by relaxation of the polymer layer to obtain thermodynamic equilibrium which causes the metal layer to be absorbed by the polymer layer as fine grains is also disclosed.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: May 23, 1995
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Toru Noguchi, Kazuo Goto, Yoshio Yamaguchi, Hajime Kakiuchi, Shigehito Deki
  • Patent number: 5356674
    Abstract: Process for applying a coating of ceramic material on a substrate by plasma spraying. The material to be sprayed, which is incorporated in the plasma jet, includes a chemical compound one constituent of which is a non-metallic element from the group N, C, B or from main groups VI or VII of the periodic classification, which decomposes, at least partially, in an inert environment before reaching the melting point and which is present in the solid phase in the applied state. To improve the process so that the chemical compound contained in the material can be applied to the substrate stoichiometrically, i.e., undecomposed, and form an impermeable, adherent, stable coating, the non-metallic element is incorporated in the plasma jet, in addition to the material to be sprayed, in a free form, not bound to a foreign element.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: October 18, 1994
    Assignees: Deutsche Forschungsanstalt fuer Luft-Raumfahrt e.V., W. C. Heraeus GmbH
    Inventors: Rudolf Henne, Winfried Weber, Guenter Schiller, Werner Schnurnberger, Michael Kabs
  • Patent number: 5334414
    Abstract: The present invention is directed to a process for coating carbon fibers with a pitch material. The process employs a pressurized air-comb for spreading a carbon fiber tow into individual carbon fiber filaments and providing the carbon fiber filaments in a spreaded tow to a powder deposition chamber. A pitch material is dried and finely ground and is then fed into the coating chamber at a point above the traveling spreaded carbon fiber tow. The pitch powder initially falls onto the fiber tow and begins forming a uniform coating around the individual carbon fibers. After falling past the point of the traveling carbon tow, the pitch powder is then recirculated back to the upper portion of the coating chamber and is entrained within a pitch powder cloud through which the threaded fiber tow travels. Fibers that are coated by such a method may be used to form carbon/carbon composites that exhibit high strength and excellent mechanical properties.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: August 2, 1994
    Assignee: Clemson University
    Inventors: Danny D. Edie, James W. Klett
  • Patent number: 5330789
    Abstract: The invention provides a composition of matter comprising silicon, silicon carbide and boron carbide as a coating for protecting carbon substrates from degradation at elevated temperatures. The invention also provides a method for forming a protective coating on carbon substrates by utilizing the aforesaid composition of matter.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: July 19, 1994
    Assignee: Loral Vought Systems Corporation
    Inventors: Roy E. Booth, David M. Shuford, John S. Linck
  • Patent number: 5302340
    Abstract: A method of forming a ceramic layer, which is compact and rich in adhesion to a metallic body, on the metallic body without adding binders even though said ceramics is hard to be sintered ceramics such as various kinds of non oxide ceramics. Said method comprises a step of placing ceramic powders and/or a mixture of ceramic powders and metallic powders or a mixture of metallic powders and non metallic powders on the metallic body and a step of forming the ceramic layer on the metallic body in a moment by a reaction heat of the Thermit.RTM. reaction under the pressurized condition. In addition, a metallic insert member can be disposed between said metallic body and various kinds of powder placed on said metallic body. Furthermore, the resulting ceramic/metal composite member is subjected to a hot hydrostatic pressing or a hot pressing under high temperatures and high pressures.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: April 12, 1994
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Shuichi Takeda
  • Patent number: 5225283
    Abstract: A process for forming a high temperature oxidation resistant coating on a carbon-carbon composite is disclosed and claimed. The process comprises applying a cyclosiloxane monomer blend containing a filler such as silicon carbide to a carbon-carbon composite, polymerizing and pyrolyzing said blend to form a filled black glass protective coating on the carbon-carbon composite.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: July 6, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Bryan A. Weyneth
  • Patent number: 5217657
    Abstract: A process for making 2D and 3D carbon-carbon composites having a combined high crystallinity, high strength, high modulus and high thermal and electrical conductivity. High-modulus/high-strength mesophase derived carbon fibers are woven into a suitable cloth. Layers of this easily graphitizible woven cloth are infiltrated with carbon material to form green composites. The carbonized composite is then impregnated several times with pitch by covering the composite with hot pitch under pressure. The composites are given a heat treatment between each impregnant step to crack up the infiltrated carbon and allow additional pitch to enter the microstructure during the next impregnation cycle. The impregnated composites are then given a final heat treatment in the range 2500.degree. to 3100.degree. C. to fully graphitize the fibers and the matrix carbon. The composites are then infiltrated with pyrolytic carbon by chemical vapor deposition in the range 1000.degree. C. to 1300.degree. C. at a reduced. pressure.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: June 8, 1993
    Inventor: Glen B. Engle
  • Patent number: 5213722
    Abstract: A method for making a separator material which is useful as a separator for storage batteries. The method involves applying a sulfonated surface layer to polyolefin resin fibers which form a woven or non-woven fabric. According to one embodiment, polyolefin resin fibers made of a first polyolefin resin are coated with a surface layer of a second polyolefin resin which is more susceptible to sulfonation than the first polyolefin resin from which said fibers are made. At the stage when the polyolefin fibers are coated with the second polyolefin resin they may be either individual fibers or formed into a woven or non-woven fabric. Thereafter, the fibers are subjected to a sulfonation process until the surface layer is sulfonated and a decomposition product formed by the sulfonation process is then removed from the fibers to obtain a separator material.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: May 25, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazutaka Iwasaki, Munehisa Ikoma, Masakazu Ikeyama, Hiroshi Kawano, Isao Matsumoto
  • Patent number: 5209950
    Abstract: This invention relates to an improved pack mixture composition useful for the formation of a SiC pack cementation coating for protecting a carbonaceous substrate from degradation at temperatures above about 800.degree. F. comprising: Si from about 15% to about 50% by weight of the total composition; B up to about 25% by weight of the total composition when present; SiO.sub.2 from about 0.01% to about 3% by weight of the total composition; and SiC from about 40% to about 85% by weight of the total composition and method thereof.The invention further relates to a cork release agent composition for providing the clean release of spent pack composition from a carbonaceous substrate.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: May 11, 1993
    Assignee: BP Chemicals (Hitco) Inc.
    Inventors: Ira C. Schwartz, Orlando L. Noche, Keith Klein
  • Patent number: 5191114
    Abstract: Direct compressible ibuprofen particles are formed by treating commercially available, dry ibuprofen with a hydrophilic solvent in one embodiment, a mixture of a hydrophilic solvent and one or more hydrophobic organic solvents in a second embodiment and one or more hydrophobic organic solvents in a third embodiment, to change at least the external crystalline shape of the ibuprofen from a flow-retarding shape to a free-flowing, easily compressible configuration. A typical hydrophilic solvent is water and among the hydrophobic solvents which may be used are acetone, methyl alcohol, ethyl alcohol, isopropyl and N-propyl alcohol. Direct compressible ibuprofen particles having superior flow characteristics may also be prepared by mixing commercially available, dry ibuprofen with micron size, amorphous silica gel in various formulations.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: March 2, 1993
    Assignee: Sage Pharmaceuticals, Inc.
    Inventor: Jivn-Ren Chen
  • Patent number: 5139814
    Abstract: This the method of manufacturing metal pipes by inserting tin or tin based coating material into the metal pipe, raising the temperature rapidly to over 1000.degree. C. in the high frequency furnace in a non-active, or non-oxide atmospheric gas, or in a reducing gas, to coat the entire interior wall of the metal pipe with tin or tin based alloy, and, then, to cool it at a high rate of cooling.According to this method of manufacturing, a uniform coating is formed in the interior wall of the metal pipe, without giving rise to residuous collection of the coating material, or to the non-formation of coating, and such effects as the prevention of metal corrosion as well as the absence of the weakening of the mechanical strength as vibration resistance and also of pressure resistance may be obtained.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: August 18, 1992
    Assignee: Usui Kokusai Sangyo Kaisha
    Inventor: Keizo Sugao
  • Patent number: 5096743
    Abstract: A process for curing a heat-weldable roofing membrane by applying elemental sulfur on the exterior surface of the roofing membrane, said membrane being a blend of (a) 50-80% by weight of an ethylene/propylene/nonconjugated diene elastomer and (b) 20-50% by weight of an ethylene-containing polymer selected from the group consisting of polyethylene, an ethylene alpha-monoolefin copolymer wherein the monoolefin contains from 3-12 carbon atoms and is present in amounts of 2-8% by weight, and an ethylene/vinyl acetate copolymer having a vinyl acetate content up to about 10% by weight, said membrane containing a cure accelerator. The roofing membrane is exposed to ambient outdoor temperatures resulting in migration of sulfur to the interior of the membrane where, together with the cure accelerator, it effects cure of the membrane.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: March 17, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Melvin A. Schoenbeck
  • Patent number: 5071828
    Abstract: Process for the production of a polycrystalline, crystal-oriented layer of a high temperature superconductor of the class (Y,RE) Ba.sub.2 Cu.sub.3 O.sub..apprxeq.7 on a substrate or between two substrates of Ag or an Ag alloy containing up to 20% by weight Au, Pd or Pt, wherein a first powder layer, of at most 5 .mu.m thickness and consisting of the simple oxides and/or mixed oxides of the elements Y, Ba, Cu in the ratio Y:Ba:Cu:O=1:2:3:6.5, is first applied, and on it is applied a second powder layer of the superconducting substance (Y,RE) Ba.sub.2 Cu.sub.3 O.sub..apprxeq.7 in a thickness of 5-10 .mu.m, and the whole is sintered in an O.sub.2 -containing atmosphere.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: December 10, 1991
    Assignee: Asea Brown Boveri Ltd.
    Inventors: Felix Greuter, Claus Schuler
  • Patent number: 5063095
    Abstract: An expandable, powder coating composition is disclosed which comprises (a) a thermoplastic resin containing a copolymer of ethylene with vinyl acetate, (b) a cross-linking agent containing an organic peroxide, (c) a blowing agent, and (d) an organic plasticizer. Powder coating of a surface of a tube or box to be used in air conditioners with the coating composition can give a heat-insulating, foamed sheath or lining over the surface.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: November 5, 1991
    Assignees: Somar Corporation, Nippondenso Co., Ltd.
    Inventors: Katsuji Kitagawa, Kazutomo Moriguchi, Tetsuo Miyake, Katusya Sano, Kiyoshi Kittaka, Tetsuya Sakakibara
  • Patent number: 5038014
    Abstract: A component is fabricated by depositing a succession of overlying beads of a material, the pattern and position of the beads being assigned the proper characteristics of the corresponding section of the desired component. Shape definition is accomplished by characterizing the component as a series of sections or slices having the thickness of the bead, and programming a computer-controlled deposition head to deposit a succession of beads with the respective patterns and positions. Deposition is preferably by precision laser welding. Complex shapes having properties comparable to properties of forged or cast material are readily prepared. The material used in successive beads may be varied, producing a component of graded composition to achieve particular properties in various regions.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: August 6, 1991
    Assignee: General Electric Company
    Inventors: Vanon D. Pratt, Wilbur D. Scheidt, Eric J. Whitney
  • Patent number: 5006368
    Abstract: Plastic particles showing improved behavior upon extrusion, comprising coating the particles with a fused layer of certain waxes or polymeric materials; and a method of preparation, comprising heating the plastic particles to a temperature just below the softening or fusing temperature of the additive while blending the particle in a high intensity blender, introducing the additive and maintaining intense blending until the temperature is above the fusing temperature of the additive, and discharging the coated particles from the blender.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: April 9, 1991
    Assignee: The Dow Chemical Company
    Inventor: Paul T. Louks
  • Patent number: 4999225
    Abstract: A method for producing a dense and tenacious coating with a thermal spray gun including a nozzle member and a gas cap. The gas cap extends from the nozzle and has an inwardly facing cylindrical wall defining a combustion chamber with an open end and an opposite end bounded by the nozzle. An annular flow of a combustible mixture is injected at a pressure of at least two bar above atmospheric pressure from the nozzle coaxially into the combustion chamber. An annular outer flow of pressurized air is injected from the nozzle adjacent to the cylindrical wall. Powder particles having a heat-stable, non-fusible component and a heat-softenable component, and entrained in a carrier gas, are fed axially from the nozzle into the combustion chamber. An annular inner flow of pressurized air is injected from the nozzle into the combustion chamber coaxially between the combustible mixture and the powder-carrier gas.
    Type: Grant
    Filed: January 5, 1989
    Date of Patent: March 12, 1991
    Assignee: The Perkin-Elmer Corporation
    Inventors: Anthony J. Rotolico, Burton A. Kushner, Amr Aly
  • Patent number: 4985273
    Abstract: The present invention concerns a field of dealing with inorganic fine particles, and provides a mass of the inorganic fine particles and method of producing the mass, and as applications of the method, an ultrathin film of inorganic fine particles and method of producing the ultrathin film, a magnetic recording medium and method of manufacturing the medium, and a method of manufacturing an inorganic pattern and method of manufacturing a inorganic wiring. Furthermore, the present invention provides the magnetic recording medium by convering the inorganic fine particles with a monomolecular film of a silane type surface active agent through chemical adsorption and permitting the inorganic fine particles and the monomolecular film to have functions.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: January 15, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Norihisa Mino
  • Patent number: 4900579
    Abstract: A process for applying and bonding a solid lubricant on a substrate whose surface has depressions and pores. The process comprises depositing fine solid lubricant particles on the surface of a substrate to be lubricated in excess of a quantity sufficient to fill essentially all depressions and pores on the substrate surface, and thereafter burnishing the substrate to distribute and bond the lubricant particles on the substrate. Such burnishing of the substrate can be accomplished during its moving contact with another substrate during intended use. Maintenance of lubricity can be accomplished by depositing additional lubricant particles on the substrate and thereafter burnishing, and can be performed while the substrate is in moving contact with another substrate whereby this moving contact performs the burnishing operation.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: February 13, 1990
    Assignee: Adolph Coors Company
    Inventors: Kyu Y. Lee, Walajabad S. Sampath, Samuel C. Wu
  • Patent number: 4871604
    Abstract: Pile carpet of nylon, polyester, or other pile yarn, is coated with 0.1 to 5 weight percent, based on weight of the pile yarn of a heat-activated adhesive powder having a melting point within the range of 100.degree. to 170.degree. C., preferably 110.degree. to 150.degree. C. For nylon pile yarn a preferred adhesive powder is a ternary copolyamide selected from the group consisting of 6/6,6/12; 6/6,6/11; and 6/6,6/12,12. The powder is heat-activated, for example to 195.degree. C. for about 60 seconds. The treated carpet displays enhanced carpet tuft appearance, improved resilience, carpet surface cleanness, and improved wear performance.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: October 3, 1989
    Assignee: Allied-Signal Inc.
    Inventor: Lewis R. Hackler
  • Patent number: 4814232
    Abstract: Methods are described for making a mirror useful in reflecting high energy laser radiation. The mirrors are comprised of an intermediate coating layer applied to the mirror substrate and a reflective coating layer applied to the intermediate layer. Plasma spray techniques are used to apply a readily polishable intermediate coating layer at high deposition rates.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: March 21, 1989
    Assignee: United Technologies Corporation
    Inventors: John H. Bluege, Curtis A. Sudduth
  • Patent number: 4774137
    Abstract: This invention relates to synthetic resin powders for coating agents and the use thereof for the production of coatings with reduced surface resistance.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: September 27, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Alberts, Hans-Heribert Burgdorfer
  • Patent number: 4725447
    Abstract: A multiple cathode DC arc plasma generator arrangement is used in connection with a single anode for thermal arc plasma processing of materials. A nozzle is provided to introduce a gas in approximately the center of the multiple cathodes, towards the anode. The nozzle injects the gas into the center of the plasma column generated between the cathodes and anode to stabilize such arc and affect the self-induced electrode jets. This provides control of the heat transfer to the anode and permits feeding of particulate matter into the core of the plasma column to enhance inflight processing (melting and/or chemical reaction) of the matter. A set of gas nozzles positioned radially about the anode may be employed for feeding of particulate matter at the anode surface.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: February 16, 1988
    Assignee: Regents of the University of Minnesota
    Inventor: Emil Pfender
  • Patent number: 4724122
    Abstract: What is disclosed is an improvement in a method for treating the reaction residue from the preparation of organochlorosilanes or chlorosilanes from the reaction of metallic silicon with a chlorinated hydrocarbon or hydrogen chloride, said method comprising combining the reaction residue with water and granulating the mixture of the reaction residue and water, the improvement comprising (A) coating the resulting granules from the granulating of the mixture of the reaction residue and water with an inert inorganic powder.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: February 9, 1988
    Assignee: Toray Silicone Co., Ltd.
    Inventor: Hidehiko Hosokawa
  • Patent number: 4692360
    Abstract: This invention relates to counter-current diffusion methods for depositing metals as interlayers within films.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lewis E. Manring, Stephen Mazur
  • Patent number: 4690834
    Abstract: The present invention relates to a process for coating solid particles using a material being highly viscous or solid at room temperature, whereby a melt of a material being highly viscous or solid at room temperature, and the particulate material, to be coated, respectively, are introduced via separate conduits (19,22) to a hollow space (7) in a rotating mixing disc (3,4), and one or more spaces (13) for a solid material in said mixing disc (3,4) respectively, and are swept by the centripetal force outwardly toward the periphery of the disc (3,4), whereby the melt is pressed from its hollow space (7) via a slot (9) in the disc (3,4) in a direction towards the upper side of the disc (3,4) and thereby forms a finely dispersed melt in the form of small droplets creating a mist, which meets the particulate solid material being swept outwardly by the centripetal force, and is attached to the surface of said material to the formation of an unbroken coating of a material being highly viscous or solid at room temper
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: September 1, 1987
    Inventors: Curt H. Appelgren, Nemo Ivarsson
  • Patent number: 4689254
    Abstract: A magnetic recording element comprised of a substrate having a magnetic recording layer disposed thereon is provided with a smooth uniform transparent lubricative and protective coating. The coating, which is composed of a telomer of tetrafluoroethylene, overlies the magnetic recording layer and also extends deeply into the topographical irregularities thereof so as to be strongly bonded thereto. To form the coating, a dispersion composed of particles of a telomer of tetrafluoroethylene dispersed in a liquid medium is applied to the surface of the magnetic recording layer, the liquid medium is removed to leave the telomer on the surface in the form of an opaque particulate film, and the particulate film is compacted, such as by use of buffing and calendering steps, to force telomer particles into the magnetic recording lever and to form a smooth uniform continuous layer of telomer over the surface of the magnetic recording layer.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: August 25, 1987
    Assignee: Verbatim Corporation
    Inventors: John L. Arndt, Karlson Koo
  • Patent number: RE32908
    Abstract: A multiple cathode DC arc plasma generator arrangement is used in connection with a single anode for thermal arc plasma processing of materials. A nozzle is provided to introduce a gas in approximately the center of the multiple cathodes, towards the anode. The nozzle injects the gas into the center of the plasma column generated between the cathodes and anode to stabilize such arc and affect the self-induced electrode jets. This provides control of the heat transfer to the anode and permits feeding of particulate matter into the core of the plasma column to enhance inflight processing (melting and/or chemical reaction) of the matter. A set of gas nozzles positioned radially about the anode may be employed for feeding of particulate matter at the anode surface.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: April 18, 1989
    Assignee: Regents of the University of Minnesota
    Inventor: Emil Pfender