Applying Superposed Diverse Coatings Or Coating A Coated Base Patents (Class 427/214)
  • Patent number: 4847110
    Abstract: A transfer recording medium comprising a substrate and a plurality of image forming elements bonded thereto by a binder is provided. The surface of each image forming element at least partially protrudes out of the binder. Such transfer recording medium may be prepared by applying the binder onto the substrate in a prescribed thickness, disposing the image forming elements in excess on the binder, and then removing the excess of the image forming elements. The thus prepared transfer recording medium provides an image having a high density and a faithfully reproducible color.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: July 11, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Nakajima, Toshiharu Inui, Noriyoshi Ishikawa, Masashi Miyagawa
  • Patent number: 4837053
    Abstract: Filaments are coated with MgO to create an effective diffusion barrier between the filament and the matrix in a metal matrix composite, thereby improving the strength and the service life of the composite.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: June 6, 1989
    Assignee: The Aerospace Corporation
    Inventors: Wei H. Kao, Howard A. Katzman, Eric M. Slater
  • Patent number: 4828883
    Abstract: A method and material for protection from airborne asbestos and other particular contamination is disclosed that is useful for protecting the environment and individuals working therein as occurs at a job site when friable or cementitious asbestos containing coatings are being removed from existing structures. The method includes application of a combined wetting and encapsulation formula which bonds the asbestos fibers to materials in the formula so as to convert friable asbestos to non-friable asbestos and a hardening procedure and formula which places the bonded non-friable asbestos in a hardened mass so that it may be safely disposed of.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: May 9, 1989
    Assignee: Allied Gator, Inc.
    Inventor: John R. Ramun
  • Patent number: 4816259
    Abstract: This invention provides a new gelatin capsule formulation and subcoating for producing soft gelatine capsules having better mechanical strength and an improved capacity for adhering to known coating compositions, particularly enteric coating compositions. The finished capsule shell formulation comprises gelatin 65%-70%, glycerin 22%-25% and water 8%-10% and the subcoating is a suspension of hydroxypropyl methylcellulose. The subcoating may also be used to manufacture improved enteric coated hard gelatin capsules.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: March 28, 1989
    Assignee: Chase Chemical Company, L.P.
    Inventors: James W. Matthews, Gerald Vergilio
  • Patent number: 4806389
    Abstract: A method for preventing the hydration/solubilization of the protective oxide coating of a phosphor is described. The method involves coating of the oxide coated phosphor particles with a continuous hydrophobic coating. After the phosphor particles are coated with the continuous hydrophobic coating and the continuous hydrophobic coating cured, they are added to a water-based suspension and subsequently processed into a lamp.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: February 21, 1989
    Assignee: GTE Laboratories Incorporated
    Inventors: Thomas E. Peters, Roger B. Hunt, Jr.
  • Patent number: 4806189
    Abstract: A composite fluid separation membrane having improved fluid permeabilities and a method for preparing same are disclosed. The composite fluid separation membrane is comprised of a porous support in the form of a flat sheet, tube or hollow fiber which is impregnated with a volatile solvent followed by the in situ formation of a separating layer wherein the preimpregnation of the pores of the porous support with the solvent provide a separating layer of substantially uniform thickness and minimum intrusion of the separating layer polymer into the pores of the porous support.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: February 21, 1989
    Assignee: Monsanto Company
    Inventors: Menahem A. Kraus, Chinh N. Tran
  • Patent number: 4798741
    Abstract: Pigment particles of a suitable size are microencapsulated by mixing them in a gelatin solution, coacervating the gelatin to coat them, cooling to set the gelatin, adding formaldehyde to harden the particles, sequestering unreacted formaldehyde with a bisulfite, adding gelatin to coat the hardened particles, precipitating the particles chemically or physically, and washing the precipitate.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: January 17, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jeffrey W. Nelson
  • Patent number: 4788080
    Abstract: There is disclosed a process for coating particles, such as ceramic, metallic and organic cores, with fine powder, such as ceramic, metal, organic or carbon powder. The process comprises providing a mixture comprising the particles and a binder which is capable of slowly melting to viscous state. Then the mixture is tumbled while slowly heating it to enable the binder to reach the viscous state while allowing the particles to be substantially covered with the binder. The next step includes cooling the mixture to about room temperature and thereafter breaking up the particles that may have agglomerated during the tumbling and heating to give individual particles covered with the binder. As a final step, the fine powder is added to the individual binder covered particles and the mixture is tumbled and heated again to the viscous state under conditions effective to provide a coating of the fine powder on the particles.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: November 29, 1988
    Assignee: Canadian Patents and Development Limited
    Inventors: Junichi Hojo, Serge Dallaire, Blaise Champagne
  • Patent number: 4767557
    Abstract: This invention relates to an enzyme and peroxyacid bleach granular composition comprising (1) a homogeneously mixed granulate of enzymes and alkaline buffer salt to protect the enzymes from deactivation when mixed with (2) a strong peroxyacid bleach granulate. This composition can also contain detergent surface-active agents, water-soluble builder salts, and other ingredients commonly used in detergents and laundry additive products.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: August 30, 1988
    Assignee: The Procter & Gamble Company
    Inventor: Robert W. Herdeman
  • Patent number: 4762736
    Abstract: This invention discloses the preparation of coatings on substrates. The coating is derived from a film formed at a sol air interface and the film is bonded to the substrate by direct contact. The coating preferably contains silica.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: August 9, 1988
    Assignee: Unilever Patent Holdings, B.V.
    Inventors: Michael J. Garvey, Ian C. Griffiths
  • Patent number: 4748051
    Abstract: Atmospheric contamination by residual hazardous particles remaining on a substrate following removal from the substrate of a layer of material containing such particles is substantially reduced by coating the substrate with certain aqueous coating compositions which produce tacky films on drying. For example, the health hazard from airborne asbestos fibers remaining attached to a substrate from which a layer of asbestos-containing material has been removed is substantially reduced by coating the substrate with an aqueous latex composition containing certain carboxylated butadiene styrene polymers.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: May 31, 1988
    Assignee: Polysar Financial Services S.A.
    Inventors: Paul E. Songer, Warren D. Stidham
  • Patent number: 4734319
    Abstract: A plastic molded article excellent in transparency, antistatic property and abrasion resistance is produced by providing on the surface of a base material comprising a transparent plastic molded article an electrically conductive coat layer comprising 60-80% by weight of an electrically conductive powder mainly composed of tin oxide and 20-40% by weight of a resin component and further providing thereon a topcoat layer comprising 0-50% by weight of an electrically conductive powder mainly composed of tin oxide and 50-100% by weight of a resin component.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: March 29, 1988
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Toshiki Doi, Masanori Moriwaki, Yukio Yasunori
  • Patent number: 4728678
    Abstract: The invention relates to a process for the grafting of unsaturated monomers to the surface of glass substrates. The process comprises applying to the glass substrates a solution comprising a silane having a double ethylene bond, contacting the products thus coated with an atmosphere formed by a mixture of ozone and oxygen, and placing these coated products in contact with an unsaturated organic monomer. The monomer may be added in the form of a solution, an emulsion or a suspension. The products thus obtained may have a number of technical applications.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: March 1, 1988
    Assignee: Saint-Gobain Recherche
    Inventors: Roger Chatelin, Louis Gavet
  • Patent number: 4728453
    Abstract: Delayed-release hypohalite bleach compositions are provided which include encapsulates having a granular, hypohalite-releasing core and a coating delaying release of hypohalite ion and scavenging hypohalite ion when the encapsulates are exposed to an aqueous solution. The coating must include an amine compound with limited solubility in water. The core preferably includes a dihalodialkyl hydantoin and the coating an amine having a saturated hydrocarbon carbon of about 6 to about 24 carbon atoms.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: March 1, 1988
    Assignee: The Clorox Company
    Inventor: Clement K. Choy
  • Patent number: 4726908
    Abstract: A free-flowing granulate of a powder-form or fine-grained component and a liquid component; the granulate containing at least 20% by weight of the liquid component, is prepared by moving the powder-form or fine-grained component in a mixer-granulator, adding the liquid component while mixing until a moist granulate having a particle size of at most 1.5 mm is obtained, subsequently coarsening the granulate thus obtained with an increase in temperature to a particle size of from 0.4 to 4 mm and optionally coating this coarse granulate with another powder-form and/or fine-grained component at 60.degree. to 90.degree. C. The optionally coated granulate is converted by lowering the treatment temperature into a dry-looking, free-flowing, coarse-grained product, which if desired, may be coated with another powder-form and/or fine-grained material. Despite the high percentage of a liquid component, the granulate thus obtained appears as a dry granulate and is free-flowing.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: February 23, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Hans Kruse, Franz-Josef Carduck, Jochen Jacobs, Klaus Koester, Rolf Puchta, Heinz-Manfred Wilsberg
  • Patent number: 4726994
    Abstract: The invention provides a method of modifying the triboelectric charging propensity of carrier particles coated with a fluorohydrocarbon polymer. The method comprises dehydrofluorinating and oxidizing the polymer by contacting the coated particles with a basic solution and a solution of an oxidizing agent. The resulting new particles have less fluorine atoms bonded to the coated polymer and also have oxygen atoms bonded thereto.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: February 23, 1988
    Assignee: Eastman Kodak Company
    Inventor: William E. Yoerger
  • Patent number: 4717594
    Abstract: A high strength self-consolidating particle comprised of a particulate substrate, a substantially cured inner resin coating and a fusible curable outer resin coating.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: January 5, 1988
    Inventors: John W. Graham, A. Richard Sinclair
  • Patent number: 4714629
    Abstract: Stone chippings of the type used in the manufacture of road surfaces by hotmix and surface dressing techniques, are rendered water resistant, and less susceptible to binder adhesion failure, by treatment with wax, preferably with wax emulsion.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: December 22, 1987
    Assignee: Mobil Oil Corporation
    Inventors: Benjamin L. Davis, Joseph M. Dixon, Nicholas D. Page
  • Patent number: 4711814
    Abstract: A nickel particle plating system in which a multiplicity of minute nickel particles are provided with gold and silver coatings and are deposited in a nonconductive matrix to form an electro-conductive body in which the particles may be placed along conductive paths. The coatings are applied to the particles in a unique manner which enables the realization of a gold coating having a maximum thickness of about 5 percent of the maximum particle dimension and a silver coating having a maximum thickness of about 10 percent of the maximum particle dimension.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: December 8, 1987
    Inventor: Robert J. Teichmann
  • Patent number: 4707287
    Abstract: This invention relates to an improved granulate enzyme composition comprising a core of enzyme material and a protective coating comprising alkaline buffer salt. The improved granulate enzyme composition has improved stability when mixed with a dry peroxyacid bleach granulate.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: November 17, 1987
    Assignee: The Procter & Gamble Company
    Inventor: Robert W. Herdeman
  • Patent number: 4696860
    Abstract: Fine particles, preferably of brown alumina (approximately 96% Al.sub.2 O.sub.3), are disposed between closely spaced and normally parallel surfaces of two adjacent transparent layers, such as are typically found in a touch sensitive overlay (TSO). The particles are preferably of a size within the range 3-100 microns, and are distributed in a density preferably in the range 300-3,000 particles per square inch, so that the larger particles are in simultaneous contact with both the parallel surfaces. Local pressure on a TSO panel with this distribution of particles of non-uniform size allows operation of the panel without the generation of distracting Newton rings between the surfaces contacting the particles. These particles may be conveniently sprayed onto either of the parallel surfaces in suspension with a fluid carrier that evaporates to leave the particles adhering to the sprayed surface.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: September 29, 1987
    Assignee: John Fluke Mfg. Co., Inc.
    Inventor: David L. Epperson
  • Patent number: 4696846
    Abstract: A method for forming protective layer on a surface portion surrounding the edge of a central aperture of a flexible magnetic disc sheet is described, comprising providing a radiation polymerizable composition on a surface portion surrounding the edge of the central aperture of the flexible magnetic disc sheet by screen printing, and hardening the composition by exposure to radiation; a flexible magnetic disc is also described, wherein a protective layer by the foregoing method is provided, with said protective layer having an inner diameter larger than the diameter of the aperture of the disc sheet and an outer diameter smaller than the diameter of the aperture of a jacket enclosing the disc sheet.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: September 29, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mikihiko Kato, Shigeo Komine, Kazuhiko Morita, Yasutoshi Okuzawa
  • Patent number: 4694905
    Abstract: The present invention relates to coated particulate matter wherein the particles are individually coated with a cured combination of phenolic/furan resin or furan resin to form a precured resin coating on a proppant such as sand, thereby substantially improving the chemical resistance of the proppant over one having a straight phenolic precured coating.Another embodiment of this invention involves the use of multiple resin coatings on the particulate matter to form a final layered coating containing the desired amount of cured resin. This multiple coating of particulate material results in a final coated product that has a smoother and more uniform surface than particulate material having its entire resin coating applied in a single operation.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: September 22, 1987
    Assignee: Acme Resin Corporation
    Inventor: David R. Armbruster
  • Patent number: 4684573
    Abstract: High oxygen barrier characteristics over a wide range of humidity conditions are obtained by providing a combination of ethylene vinyl alcohol copolymer and vinylidene chloride copolymer in separate component films of a composite film.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: August 4, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Walter B. Mueller, Henry G. Schirmer
  • Patent number: 4666762
    Abstract: A surface protecting material is prepared by having a soft aluminum foil having a thickness of 15 to 50.mu. superposed on the surface of a substrate of plastic film such as polyethylene, polyvinyl chloride, or polyester and further having a layer of resin containing at least 10% fluorine resin or silicone resin and having not more than 1.mu. in surface coarseness superposed directly on the surface of the aluminum foil or indirectly thereon through the medium of a colored layer formed thereon. This surface protecting material is useful for decorating and repairing various kinds of goods and to obtain a flat surface thereon.
    Type: Grant
    Filed: July 26, 1984
    Date of Patent: May 19, 1987
    Assignee: Tokai Metals Co., Ltd.
    Inventor: Hiroaki Yamamoto
  • Patent number: 4666787
    Abstract: A material which is intended for use in sliding surface bearings comprises a metallic backing, a porous metallic substrate layer applied to said backing, and a PTFE-filler mixture, which completely fills the pores of the substrate layer and constitutes an antifriction layer. The bond strength between the antifriction layer and the substrate layer is improved by coating that surface of the substrate layer which faces the antifriction layer with a primer.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: May 19, 1987
    Assignee: Kolbenschmidt Aktiengesellschaft
    Inventors: Wolfgang Bickle, Jurgen Braus, Hans-Paul Baureis
  • Patent number: 4666738
    Abstract: A free flowing particulate heavy duty laundry detergent containing no more 8.7% of phosphorus (from phosphate) is comprised of sodium tripolyphosphate particles having nonionic detergent in the interior and on the surface thereof, which adheres a coating of smaller particles of ion-exchanging zeolite to the phosphate. Also within the invention is a method of making such a product by pre-mixing spray dried sodium tripolyphosphate particles and smaller zeolite particles and admixing with them, as by spraying, in liquid form, onto moving particles, a normally liquid or pasty nonionic detergent, such as a higher fatty alcohol polyethylene oxide condensation product, which penetrates the sodium tripolyphosphate particles and adheres zeolite particles to the surfaces thereof.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: May 19, 1987
    Assignee: The Colgate-Palmolive Co.
    Inventor: Harold E. Wixon
  • Patent number: 4666740
    Abstract: A free flowing phosphate-free particulate heavy duty laundry detergent is comprised of particles of a mixture of sodium carbonate and sodium bicarbonate having nonionic detergent in the interior and on the surface thereof, to which is adhered a coating of smaller particles of ion exchanging zeolite. The product made is exceptionally free flowing and, although the particles are relatively large, is also of high bulk density (over 0.6 g./cc.). Also within the invention is a method of making such products by contacting the particles of mixed sodium carbonate and sodium bicarbonate with a normally liquid or pasty nonionic detergent in the liquid state so that the detergent is largely absorbed by the particles and coats the surfaces thereof, which are then coated with powdered zeolite which adheres to the surface nonionic of the particles and makes them free flowing.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: May 19, 1987
    Assignee: The Colgate-Palmolive Co.
    Inventor: Harold E. Wixon
  • Patent number: 4664950
    Abstract: A free flowing particulate heavy duty laundry detergent containing no more than 8.7% of phosphorus (from phosphate) is comprised of sodium tripolyphosphate particles having nonionic detergent in the interior and on the surface thereof, which adheres a coating of smaller particles of ion-exchanging zeolite to the phosphate. Also within the invention is a method of making such a product by pre-mixing spray dried sodium tripolyphosphate particles and smaller zeolite particles and admixing with them, as by spraying, in liquid form, onto moving particles, a normally liquid or pasty nonionic detergent, such as a higher fatty alcohol polyethylene oxide condensation product, which penetrates the sodium tripolyphosphate particles and adheres zeolite particles to the surfaces thereof.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: May 12, 1987
    Assignee: The Colgate Palmolive Co.
    Inventor: Harold E. Wixon
  • Patent number: 4664817
    Abstract: A free flowing, particulte detergent-softener of high bulk density is comprised of nucleus particles of builder salt, preferably a mixture of sodium carbonate and sodium bicarbonate, having nonionic detergent in the interior and on the surface thereof, to which is adhered a coating of smaller particles of ion exchanging zeolite, and quaternary ammonium halide fabric softening compound. In a preferred embodiment of the invention the quaternary ammonium halide is "insulated" from immediate contact with laundry when the detergent-softener is added to the wash water by being added to the nucleus particles with the nonionic detergent, after which the resulting particles are coated with the zeolite powder. In another embodiment of the invention the product described is further coated with nonionic detergent and zeolite.
    Type: Grant
    Filed: March 5, 1982
    Date of Patent: May 12, 1987
    Assignee: The Colgate-Palmolive Co.
    Inventor: Harold E. Wixon
  • Patent number: 4663194
    Abstract: A free flowing phosphate-free particulate heavy duty laundry detergent is comprised of particles of a mixture of sodium carbonate and sodium bicarbonate having nonionic detergent in the interior and on the surface thereof, to which is adhered a coating of smaller particles of ion exchanging zeolite. The product made is exceptionally free flowing and, although the particles are relatively large, is also of high bulk density (over 0.6 g./cc.). Also within the invention is a method of making such products by contacting the particles of mixed sodium carbonate and sodium bicarbonate with a normally liquid or pasty nonionic detergent in the liquid state so that the detergent is largely absorbed by the particles and coats the surfaces thereof, which are then coated with powdered zeolite which adheres to the surface nonionic of the particles and makes them free flowing.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: May 5, 1987
    Assignee: The Colgate-Palmolive Co.
    Inventor: Harold E. Wixon
  • Patent number: 4657784
    Abstract: High efficiency encapsulation of core particles, particularly halogen bleaches, by (i) encapsulating the core particle in at least two separate coats wherein the melting point of the inner or first coating material is below the melting point of the outer or second coating material, (ii) heating the thus encapsulated particle to a temperature between the melting points of the inner and outer coating materials in order to liquefy the inner coat, and (iii) allowing the liquid inner coat to solidify and form a continuous, nonporous encapsulating coating.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: April 14, 1987
    Assignee: Ecolab Inc.
    Inventor: Keith E. Olson
  • Patent number: 4642247
    Abstract: A recording medium for recording with aqueous ink without direct contact of recording means therewith comprises an under layer and an upper layer provided thereon. The upper layer is formed of substantially water-resistant resin and is sufficiently thin to provide immediate water and air permeability and the under layer is more hydrophilic than the upper layer. There is also provided a recording process employing aqueous ink droplets and a recording medium as mentioned above.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: February 10, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidemasa Mouri, Michiaki Tobita, Naonobu Eto, Shunzo Kouno, Kosuke Ohkura, Shigeo Toganoh, Ryuichi Arai, Mamoru Sakaki, Kazuo Iwata, Hiromi Shibasaki
  • Patent number: 4624865
    Abstract: Electrically conductive microparticles characterized by high conductivity and low density are comprised of electrically nonconductive microballoons having an electrically conductive coating of a metal. When dispersed in an electrically nonconductive matrix, an electrically conductive composite material is formed in which the microparticles form a network of contacting particles throughout the matrix.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: November 25, 1986
    Assignee: Carolina Solvents, Inc.
    Inventors: Wayne L. Gindrup, Rebecca R. Vinson
  • Patent number: 4620987
    Abstract: A surface treatment method for magnetic particles is disclosed, which comprises the steps of activating magnetic particles by application of heat thereto, treating the surface of the magnetic particles with a reactive silane coupling agent, bringing the treated magnetic particles into contact with at least one polymerizable vinyl-type monomer, polymerizing the monomer to form a polymer, and coating the surface of the magnetic particles with the polymer.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: November 4, 1986
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Yamashita, Kenkichi Muto
  • Patent number: 4621024
    Abstract: A process for preparing a metal-coated hollow microsphere comprising the combination of steps of: (a) vigorously admixing a major quantity of hollow cenospheres/microspheres with a thermo-setting binder adhesive until the cenospheres are wet-out; (b) slowly adding metal flakes to the thus wet-out cenospheres of step (a) until the wet-out cenospheres are fully coated with the metal flakes; (c) binding the metal flakes to the said wet-out cenospheres by slowly increasing the temperature of the metal coated wet-out cenospheres from step (b), the temperature being raised up to about 350.degree. F.; and (d) the metal-coated cenospheres of step (c) are intermittently admixed in the absence of any further heating until dry. The dry product is ready for packaging.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: November 4, 1986
    Assignee: Paper Applications International, Inc.
    Inventor: Frederick A. Wright
  • Patent number: 4620197
    Abstract: By allowing at least the surface of an ink jet recording sheet to contain a cationic fluorescent agent, the waterproofness of water-soluble dyes in inks as well as the brightness of the recording sheet can be enhanced and thereby multicolor images of excellent color reproducibility can be formed on the sheet.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: October 28, 1986
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Shigehiko Miyamoto, Yoshinobu Watanabe, Yuriko Kishi
  • Patent number: 4610320
    Abstract: A method is disclosed for applying hard tungsten carbide particles to the surface of metal stabilizers used in the drilling of oil, gas, geothermal and water wells. The process consists of applying a soft, elastic metal powder to the surface of the substrate. Large tungsten carbide particles, which have also been coated with the soft powder, are placed on top of the layer of soft powder. The particles are then covered with additional soft powder, which powder is then fused to form a homogeneous, large tungsten carbide particle containing mixture bonded to the substrate. A hard matrix is applied and fused over the large tungsten carbide particle containing mixture. The large tungsten carbide particles, which have a low coefficient of expansion, are thereby contained in a soft elastic metal matrix which acts as an expansion and cushion material, while the hard matrix presents a less resilient, more wear resistant surface.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: September 9, 1986
    Assignee: Directional Enterprises, Inc.
    Inventor: Billy Beakley
  • Patent number: 4610897
    Abstract: A method for the recovery of fugitive dust by encapsulation of fugitive calcined coke dust into agglomerate balls having substantial compressive strength which involves the steps of water-wetting calcined coke dust with an aqueous solution of a polyethoxylated alkyl phenol wetting agent to provide moist coke dust and thereafter admixing the moist dust with an asphalt emulsion whereby nonfriable agglomerate balls of asphalt encapsulated calcined coke dust can be recovered.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: September 9, 1986
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert L. Lipscomb, Virgil H. Cargle, Domenick Bausano
  • Patent number: 4599251
    Abstract: The decorated article, for instance an instrument dial or watch dial, article of jewelry or ornamented article of use, possesses at least one surface or decorative layer which, in the presence of reflected light, appears to be colored, for instance yellow, red, blue or gray. This surface or decorative layer is formed by a silicon substrate or substratum, or lower layer as well as an upper or top layer fixedly connected thereto, for instance, connected by a reaction and/or deposition with the substratum. This top layer is permeable for optical light and comprises a silicon compound, preferably silicon dioxide, which under standard conditions is solid and practically inert, and has a thickness sufficient for interference-color formation, typically in the range of 50-1000 nm, preferably 90-500 nm. The surface or decorative layer can constitute the decorated article itself, for instance an instrument dial or watch dial or can be part of a decorated article, for instance a cigarette lighter.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: July 8, 1986
    Assignee: Metalem S.A.
    Inventor: Gilbert Feller
  • Patent number: 4597991
    Abstract: A method for producing an improved particulate material for use in treating subterranean formations as a proppant and/or as a fluid loss agent in hydraulic fracturing and as a screening material in gravel packing comprised of heat curable particles capable of forming a cohesive mass, said particles comprised of a high strength center, a coupling agent chemically bound to the center with a heat curable resin coated over the center.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: July 1, 1986
    Inventors: John W. Graham, A. Richard Sinclair
  • Patent number: 4595603
    Abstract: A method of making a diamond heatsink includes securing a number of spaced diamonds to a sacrificial plate and then metallizing them with, for example, a thin layer of gold, silver, copper or aluminium. The plate and the diamonds are subsequently metal plated with a similar metal to the metallization until the diamonds are completely covered. The sacrificial plate is removed and the exposed surface cleaned and polished. Finally the assembly is diced to produce a number of individual heatsink assemblies.
    Type: Grant
    Filed: October 24, 1984
    Date of Patent: June 17, 1986
    Assignee: Plessey Overseas Limited
    Inventors: Ian Davies, Anthony M. Howard
  • Patent number: 4594268
    Abstract: The instant invention is directed to a method for suppressing dust comprising contacting the material being treated with an aqueous emulsion of a methacrylate polymer or a composition comprising a hydrophobic liquid and a methacrylate polymer. These emulsions and compositions may further comprise a wetting/penetrating surfactant.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: June 10, 1986
    Assignee: Calgon Corporation
    Inventor: Ross C. Kirwin
  • Patent number: 4553982
    Abstract: The use of an aromatic amine salt of a substituted pentafluoroantimonic acid as a curing agent for epoxy resins, and the use of the epoxy resin compositions as binders for abrasives in abrasive sheet products, are disclosed. The aromatic amines are selected from aniline and hindered aromatic amines.
    Type: Grant
    Filed: March 5, 1985
    Date of Patent: November 19, 1985
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: Gerald E. Korbel, Janis Robins, Harold E. Rude
  • Patent number: 4547390
    Abstract: This invention relates to implantable porous prostheses for use as bone or hard tissue replacements anywhere in the body. The porous implants comprise loose, individual polymeric particles of a specified size, coated with a hydrophilic material and barium sulfate particles. The prostheses are biologically compatible in the body and promote bone and tissue ingrowth and attachment. This invention also relates to a method for producing the novel prosthetic devices disclosed herein.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: October 15, 1985
    Assignee: Medical Biological Sciences, Inc.
    Inventors: Arthur Ashman, Paul F. Bruins
  • Patent number: 4544415
    Abstract: Pearlescent pigments having improved weathering resistance are based on mica flakes coated with metal oxides, these pigments possessing on top of the coat of metal oxide a topcoat which contains a polysiloxane and a rare earth metal compound.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: October 1, 1985
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Klaus-Dieter Franz, Manfred Kieser, Otto Stahlecker
  • Patent number: 4526699
    Abstract: Bleaching compositions consisting of an N-halo compound with a coating comprising a silicate bound, hydrated, soluble inorganic salt and an alkali metal salt of boric acid. The compositions exhibit decreased localized dye attack on colored fabrics and decreased fabric attack and are useful in fabric laundering either alone or when formulated with a laundry detergent.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: July 2, 1985
    Assignee: FMC Corporation
    Inventors: Charles E. Jones, Mark A. Weiss
  • Patent number: 4513025
    Abstract: A single particle penetration phosphor employs La.sub.2 O.sub.2 S:Tb particles as a core particle having a thin layer of La.sub.2 O.sub.2 SO.sub.4 :Tb formed thereon by oxidation to provide a barrier which must be penetrated by excitation electrons to produce narrow bandwidth green spectral emission from the particle. The thin barrier is in turn coated by a layer of YVO.sub.4 :Eu particles which produce narrow bandwidth red spectral emission upon electron excitation. The barrier layer increases the voltage turn on characteristic of the green carrier host thereby causing the electron irradiated phosphor to radiate in the red spectrum for low voltages and in the green spectrum for higher voltages. Additionally, methods are disclosed for synthesizing the above single particle penetration phosphor.
    Type: Grant
    Filed: May 11, 1982
    Date of Patent: April 23, 1985
    Assignee: Sperry Corporation
    Inventors: Thomas E. Clark, Charles T. Burilla
  • Patent number: 4478914
    Abstract: A multiple-layer process for applying, in alternate, successive molecular layers, a protein material, and a ligand extender material to a surface to modify the properties of the surface and to the multiple-layer product so prepared.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: October 23, 1984
    Inventor: Roger W. Giese
  • Patent number: RE31712
    Abstract: A multiple-layer process for applying, in alternate, successive layers, the protein, avidin, and a biotin-containing extender material to a solid surface to modify the properties of the surface and to the multiple-layer product so prepared.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: October 23, 1984
    Inventor: Roger W. Giese