Sodium Silicate Patents (Class 428/453)
  • Patent number: 9227338
    Abstract: Wood preservatives, methods for protecting wood and wood-based products and/or structures utilizing the preservatives, and treated wood and wood-based articles and/or structures incorporating the preservatives are described. Methods are also provided for remediating structures already infected with mold. The subject wood preservative formulation includes a borate compound and a fatty acid. The addition of an emulsifier to the formulation further facilitates application of the treatment. The combination of a borate compound and fatty acid combination typically provide a synergistic effect compared to the additive result provided by the combination's individual components.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: January 5, 2016
    Inventor: Robert Coleman
  • Patent number: 8784978
    Abstract: The invention relates to polymer nanocomposites including either silica or non-platelet metal oxide particle and the use of these polymer noncomposites in the core layer of multilayer barrier films and laminates. The polymer nanocomposites provide high-barrier properties and low gas permeation.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: July 22, 2014
    Assignee: Triton Systems, Inc.
    Inventors: Shah Apoorva, Giaya Arjan, Kim Yoojeong
  • Patent number: 7745011
    Abstract: A low-cost and effective coating composition for cardboard allows use of thinner paper board with the same or higher strength relative to conventional water-resistant cardboard. The resulting cardboard can also be repulped and more easily recycled. The inventive coating composition, preferably applied to the fluted inner ply of the cardboard (as a waterproof barrier), is compatible with the utilization of low-cost starch-based adhesives for gluing the fluting to the liners. At least one side of the fluting cardboard is coated with a composition comprising: from about 10% to 70% by weight, and more preferably from about 40% to 60% by weight, of sodium silicate; from about 10% to 60% by weight, and more preferably from about 30% to about 50% by weight, of a synthetic resin emulsion; from about 10% to 50% of a paraffin-water emulsion; and from about 5% to about 25% by weight of added water.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: June 29, 2010
    Assignee: Ingenieros Consultores Asociados, S.A.
    Inventor: Carlos Cantu-Gonzalez
  • Patent number: 7678458
    Abstract: A wafer chuck for use in a lithographic apparatus, which includes a low-thermal expansion glass ceramic substrate, a silicon silicon carbide layer, and a bonding layer comprising silicate having a strength of at least about 5 megapascals, the bonding layer attaching the silicon silicon carbide layer to the substrate is described. Also, a method of forming a wafer chuck for use in a lithographic apparatus, which includes coating a portion of one or both of a low-thermal expansion glass ceramic substrate and a silicon silicon carbide layer with a bonding solution, and contacting the substrate and the silicon silicon carbide layer to bond the substrate and the silicon silicon carbide layer together is described.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: March 16, 2010
    Assignee: ASML Holding N.V.
    Inventors: Matthew Lipson, Robert D. Harned, Geoffrey O'Connor, Timothy O'Neil
  • Patent number: 6821631
    Abstract: A method of treating substrates, such as wood, including the steps of applying an alkali silicate solution to one or more substrates and applying an alkali borate solution with boric oxide (B2O3) content to the substrates. Substrates that have been treated using the present method include a borate-silicate polymer within the substrate. When the present substrates are wood, wood products, or green lumber, they may be used to build structures.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: November 23, 2004
    Assignee: Wood treatment Products, Inc.
    Inventors: Robert N. Grantham, Robert R. Weaver, III
  • Patent number: 6811980
    Abstract: The present invention relates to a process for immobilization of nucleic acid molecules on a substrate, wherein the substrate is treated with atomic oxygen plasma prior to immobilizing the nucleic acid molecules thereon. The invention is further related to immobilized nucleic acid molecules and uses thereof.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: November 2, 2004
    Assignee: Sony International (Europe) GmbH
    Inventors: William E. Ford, Jurina Wessels, Oliver Harnack
  • Patent number: 6649235
    Abstract: A method for producing a coated polymeric article by co-extruding polypropylene and a maleic anhydride modified polypropylene, corona-treating, and applying a polysilicate barrier is described. Also provided are films and bottles produced using this method.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: November 18, 2003
    Assignee: Hoechst Trespaphan GmbH
    Inventor: Ravi Prasad
  • Patent number: 6176769
    Abstract: A ceramics dress substrate of the present invention capable of both performances of cutting a cut material with a high accuracy and dressing a diamond cutting grindstone with an excellent cutting property and an reduced wearing amount of the grindstone. This ceramics dress substrate comprises sintering a mixture of ceramics grinding particles and a silicate mineral, The ceramics grinding particles are preferably uniformed and have a scratch hardness ranging from 6 to 10. Alumina grinding particles, silicon carbide and mullite are preferably used as the ceramics grinding particles, and a kaolin mineral, pyrophyllite, montmorillonite, sericite, talc and chlorite are preferably used as the silicate mineral. The ceramics dress substrate is preferably coated with glass.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: January 23, 2001
    Assignees: Narumi China Corporation, Sumitomo Special Metals Co., Ltd.
    Inventors: Masato Suzuki, Shirohito Matsuyama, Katsushi Sugita, Kazutoyo Shimizu, Naoyuki Okamoto
  • Patent number: 6165257
    Abstract: An amorphous mineralized coating upon an iron containing surface wherein the amorphous mineralized coating has a formula A.sub.x B.sub.y O.sub.z --nH.sub.2 O wherein A comprises iron and B comprises silicon and the values of x, y and z are greater than zero; wherein the amorphous mineralized coating comprises an amorphous phase and inorganic complex oxide crystals.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: December 26, 2000
    Assignee: Elisha Technologies Co. LLC
    Inventors: Robert L. Heimann, William M. Dalton, Nancy M. McGowan, David M. Price
  • Patent number: 6146766
    Abstract: A sodium silicate polymerization method was used to incorporate sodium silicate and/or other water soluble inorganic fire retardants into an insoluble matrix. By using a vacuum/pressure technique, a water soluble sodium silicate/borate mixture was forced into the interior of various cellulosic materials, then was heat polymerized into an insoluble fire retardant matrix. This produced a dual action fire retardant material also with the following properties: moisture resistant, weather proof, and improved strength. Water insoluble forms of sodium silicate and borates have not been possible until now. This process and testing was then repeated with six other water soluble fire retardant combinations, making them similarly water insoluble.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: November 14, 2000
    Inventors: Karen Marie Slimak, Robert Andrew Slimak
  • Patent number: 6143420
    Abstract: The disclosure relates to the forming mineralized coatings on metal surfaces and to methods of forming such coatings. The coating can include a wide range of compounds and normally at least a portion of the coating corresponds to an amorphous phase. The coating and method are particularly useful in providing a corrosion resistant coating or film upon a metallic surface. This aspect of the disclosure involves the formation of a corrosion resistant "mineralized" layer of tailored composition upon a metal substrate.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: November 7, 2000
    Assignee: Elisha Technologies Co LLC
    Inventors: Robert L. Heimann, William M. Dalton, David R. Webb, Nancy M. McGowan
  • Patent number: 6132822
    Abstract: This invention relates to an economical coating composition for porous substrates that provides extremely glossy surfaces, is capable of supporting holographic images, provides good oxygen barrier properties as well as good oil, grease, solvent and water resistance. Said coatings on paper substrates are printable, biodegradable, recyclable, and repulpable. They are also suitable for use in conjunction with food products. This invention also relates to a process for applying said coatings onto porous substrates as well as a process for the economical production of inexpensive holographic images on substrates such as paper and cardboard containers.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: October 17, 2000
    Assignee: A*Ware Technologies, L.C.
    Inventors: Derric T. Overcash, Richard C. Wallace
  • Patent number: 6040057
    Abstract: Materials variously treated with sodium silicate were studied until enough information was obtained to find a way to solve the problems that have prevented sodium silicate from being the used as a fire retardant. These problems are: 1) water solubility (miscible with water), which results in extensive leaching when exposed to water, 2) cracking, chipping and peeling of treated surfaces, and 3) surface granulation. During flame tests it was discovered that sodium silicate formed a foam-like material, and this material was found to have become water insoluble, yet its elemental composition had remained virtually identical to that of the unmodified sodium silicate. This investigator proposes that under the influence of heat and dehydration, sodium silicate undergoes a polymerization process resulting in particles sizes too large to dissolve in water, and then developed a mechanism to explain how the process could occur.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: March 21, 2000
    Assignee: Karen M. Slimak
    Inventors: Robert A. Slimak, Christian C. Haudenschild, Karen M. Slimak
  • Patent number: 6004387
    Abstract: A fire resistant liquid and a process for the preparation thereof characterized in reacting granulated potassium hydroxide, powdered sodium carbonate, lumps of metallic silicon and water.A fireproof building material molded by applying a viscous liquid of the fire resistant liquid mixed with bentonite and fibers on one side or both sides of wood-, paper-, metal- and composite boards, and a fireproof building material molded by laminating an incombustible cotton plate to a base plate through a compounding mixture of the fire resistant liquid with bentonite and Chinese cotton. A fire resistant adhesive prepared by mixing the fire resistant liquid with bentonite, Chinese cotton and BENGEL 31.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: December 21, 1999
    Assignee: Kyoei Corporation
    Inventor: Kazuo Ishikawa
  • Patent number: 5770316
    Abstract: Heat-stable, flexible polarizers with a polarizing layer of a polymer with conjugated double bonds with the exception of exclusively polyacetylene-containing polymer matrixes are obtained if their surfaces are sealed with silicate.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: June 23, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventor: Karl-Heinz Aleksander Ostoja Starzewski
  • Patent number: 5650227
    Abstract: Mouldings made from polyacetylene-containing polymer products comprising poly-acetylene and a polymer other than polyacetylene are distinguished by improved stability of their optical and electrical properties in air when they have a protective coating of a silicate.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: July 22, 1997
    Assignee: AGFA-Gevaert Aktiengesellschaft
    Inventor: Karl-Heinz Aleksander Ostoja Starzewski
  • Patent number: 5591256
    Abstract: Sodium alumino-silicates are produced by silicate/clay reactions under hydrothermal conditions with increased solids during processing while still producing structural materials characterized by low oil absorption values, high total pore volume and increased differential pore volumes. The products are useful as coating pigments for paper and paperboard, paper fillers, paint pigments and as reinforcing pigments for rubber.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: January 7, 1997
    Assignee: J. M. Huber Corporation
    Inventors: Gary M. Freeman, Richard D. Carter, Thad T. Broome, Kurt H. Moller
  • Patent number: 5480587
    Abstract: A method of modifying an inorganic material which evolves gases and/or vapors at a temperature which is detrimental to the processing temperature of polymer or paper systems so that the modified material can be used as a fire retardant additive with that polymer or paper system. The method comprises the steps of: (1) providing a first material; (2) treating the first material to remove the portion which evolves gas which is detrimental to the processing of the polymer or paper system; and (3) combining a second material with the first material to create a modified material which does not evolve gas at a temperature which is detrimental to the processing of the paper or polymer system.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: January 2, 1996
    Assignee: Aluminum Company of America
    Inventors: Lawrence L. Musselman, Howard L. Greene
  • Patent number: 5186746
    Abstract: Sodium Aluminosilicates (SAMS) are produced by silicate/clay reactions under hydrothermal conditions, the SAMS being characterized by low oil absorption values and high total pore volumes. The SAMS products are useful as coating pigments for paper, paper fillers and paint pigments.
    Type: Grant
    Filed: January 10, 1992
    Date of Patent: February 16, 1993
    Assignee: J. M. Huber Corporation
    Inventor: Gary M. Freeman
  • Patent number: 5167707
    Abstract: High performance synthetic sodium aluminosilicate compositions, and the method of making the same by the hydrothermal reaction of certain delaminated kaolin clays with select sodium silicate reagents, result in enhanced performance flatting agents for paint systems and anti-block agents for plastic film applications.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: December 1, 1992
    Assignee: J. M. Huber Corporation
    Inventors: Gary M. Freeman, John M. M. Harrison, Marion M. Jones, Thad T. Broome
  • Patent number: 5043225
    Abstract: A preservative-bearing pad and a method of using same to treat the interface between a railroad cross tie and tie plate. A sandwich of water-soluble active ingredient disposed between two layers of biodegradable hydrophilic backing is simply placed on the adzed portion of a cross tie prior to installation of the tie plate and rail during a rail laying or relaying operation.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: August 27, 1991
    Inventors: David J. Ostby, John M. Conover
  • Patent number: 5035951
    Abstract: Disclosed in an intumescent coating composition comprising an aqueous mixture of a water soluble alkali metal silicate, a hydrated metal silicate clay, and an inorganic particulate material which, when exposed to flame temperatures, endothermically releases a nonflammable gas. The coating can be applied to metal, wooden and foamed polymeric materials and serves to provide a thermal barrier against the effects of overheating.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: July 30, 1991
    Assignee: Firestop Chemical Corporation
    Inventor: Felix A. Dimanshteyn
  • Patent number: 4988561
    Abstract: A family of novel and unique synthetic alkali metal alumino-silicates (SAMS) are produced by the hydrothermal reaction between kaolin and alkali metal silicates. The integrated composition of the SAMS products is a unique entity having an overall composition ofxM.sub.2 O:Al.sub.2 O.sub.3 :ySiO.sub.2 :zH.sub.2 Owhere x is the number of moles of alkali metal oxide and is an integer from 0.01 to 2.0, M is the alkali metal, y is the number of moles of SiO.sub.2 in the unique SAMS compositions and is an integer greater than 2.0, and z is the number of moles of bound water and is an integer ranging from 1.0 to 5.0. The unique SAMS compositions are structured materials in which the structure can be controlled, and are therefore useful as functional fillers, as TiO.sub.2 extenders, as silica extenders or as reinforcing agents for paper, paint, rubber, plastics and specialty products.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: January 29, 1991
    Assignee: J. M. Huber Corporation
    Inventor: Satish K. Wason
  • Patent number: 4902445
    Abstract: Fiber boards of high strength which are highly water- and flame-resistant are disclosed, as well as a method for making such boards and an inorganic binder composition for bonding wood fibers. The boards comprise a lignin-containing fiber material, a binder derived from a binder composition comprising an alkali silicate solution, sulphur and/or an inorganic sulphur compound, and a calcium and/or magnesium compound and, optionally, fillers and/or hydrophobing agents.The fiber boards are manufactured by mixing the lignin-containing fiber material with the binder composition and optional further additives, whereupon the mix is compressed at a high pressure and at a temperature of 130.degree.-230.degree. C.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: February 20, 1990
    Assignee: Nova Scand Utveckling AB
    Inventors: Georg Bjorhaag, Goran Embring, Karl-Gunnar Stahl
  • Patent number: 4863796
    Abstract: A family of synthetic alkali metal aluminosilicates (SAMS) are produced by the hydrothermal reaction between kaolin clay and alkali metal silicates. The integrated composition of the SAMS products is a unique entity having an overall composition ofxM.sub.2 O:Al.sub.2 O.sub.3 :ySiO.sub.2.zH.sub.2 Owhere x is the number of moles of alkali metal oxide and is an integer from 0.01 to 2.0, M is an alkali metal, y is the number of moles of SiO.sub.2 in the unique SAMS compsoition, and z is the number of moles of bound water and is an integer ranging from 1.0 to 5.0. The composition essentially comprises altered kaolin clay platelets with an integral rim or protuberance of essentially amorphous alkali metal silicate-kaolin reaction product. The unique SAMS compositions are structured materials in which the structure can be controlled, and are therefore useful as functional fillers, as TiO.sub.2 extenders, as silica extenders or as reinforcing agents for paper, paint, rubber, plastics and specialty products.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: September 5, 1989
    Assignee: J. M. Huber Corporation
    Inventor: Satish K. Wason
  • Patent number: 4842772
    Abstract: Alumina trihydrate particles coated with alkali metal silicate, alkaline earth metal silicate or alumino silicate are useful as fillers in paper and plastics and provide good opacity and brightness properties as well as fire retardancy. The alumina trihydrate products are prepared by reaction of alumina trihydrate with an alkali metal silicate, an alkaline earth metal silicate, or alumino silicate, or the reaction of alkali metal silicate or alkaline earth metal silicate with aluminum sulfate to produce an alumino silicate precipitate coating in situ.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: June 27, 1989
    Assignee: J. M. Huber Corporation
    Inventor: Withiam Michael C.
  • Patent number: 4761342
    Abstract: A fibre board having improved strength, water-resistance and flame resistance comprises a lignin-containing fibre material and a binder. The binder is formed from a binder solution containing an alkali silicate solution, a sulphur component, and an metal component. The solution may also include hydro-foaming agents, fillers and other materials. The preferred binder solution includes 50-90 parts by weight alkai silicate solution, 0.5-10 parts by weight sulphur component and 10-40 parts by weight of the metal component. A method is also presented for the formation of an improved fibre board through utilization of a preferred mixture of a lignin-containing fibre material and a preferred binder solution under pressure, at a temperature of about 130.degree. to 230.degree. centigrade.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: August 2, 1988
    Assignee: Nova Scand Utveckling AB
    Inventors: Georg Bjorhaag, Goran Embring, Karl-Gunnar Stahl
  • Patent number: 4734336
    Abstract: A twin ply uncoated paper for ink jet processes comprised of a supporting paper substrate sheet as a first ply, and thereover as a second ply a paper sheet with filler additives attached to the fibers thereof, which additives are, for example, selected from the group consisting of amorphous synthetic silicas, inorganic silicates, metal alumino-silicates, and inorganic oxides. Three ply papers are also illustrated wherein there is situated between two second plies a supporting substrate sheet.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: March 29, 1988
    Assignee: Xerox Corporation
    Inventors: John F. Oliver, Arthur Y. Jones
  • Patent number: 4726985
    Abstract: A laminate of foil and kraft paper is adhered to the upper face of fiber glass insulation so that the exposed foil reflects radiant heat entering the attic through the roof of a building structure. Relatively thick kraft paper supports the very thin layer of foil without causing a fire hazard due to the use of an inorganic adhesive, such as sodium silicate, to bond the two together and also due to the use of a fire retardant water-based adhesive to bond the foil-kraft laminate to the fiber glass. The laminate is preferably perforated to prevent it from functioning as a vapor barrier.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: February 23, 1988
    Assignee: Manville Corporation
    Inventors: Ralph M. Fay, Theodore R. Rohweder
  • Patent number: 4708910
    Abstract: Fire-resistant wood composites, in particular wallboards, which in addition to a wood component contain a bonding agent consisting of a finely-ground hydraulic blast-furnace slag which is activated by an activator having an alkaline reaction, advantageously by waterglass and alkali hydroxide. The invention also relates to a process for manufacture of such wood composites and to an use of finley-ground hydraulic blast-furnace slag as a bonding agent in the manufacture of such wood composites.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: November 24, 1987
    Assignee: Forss Consult Ky, Kb
    Inventor: Bengt Forss
  • Patent number: 4642268
    Abstract: A wood substrate having good flame resistance characteristics while substantially maintaining its adherence characteristics for asphalt products. One surface of the wood substrate has a coating of an inorganic soluble silicate impregnating the wood substrate and forming a firm bonding with it. A process which is disclosed comprises: (a) coating at least one surface of a wood substrate with a concentrated solution of an inorganic soluble silicate, and (b) drying said coating as to leave on said surface the inorganic silicate impregnating the wood substrate and form a firm bonding with the wood substrate.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: February 10, 1987
    Assignee: Domtar Inc
    Inventor: Andre St.-Michel
  • Patent number: 4461494
    Abstract: This invention relates to sheet materials, on which a coating is applied and which are used for pressure sensitive carbonless copying systems, wherein at least one of the components responsible for color development in the coating is a predominantly white four layer structured lamelar ground chlorite mineral having an iron content of about 0.5% to 8% by weight preferably of about 3% by weight.The components responsible for color development in the coating are preferably composed by 40 to 60% by weight of said ground chlorite mineral and 60 to 40% by weight of activated montmorillonite or bentonite or smectite clay.
    Type: Grant
    Filed: June 2, 1981
    Date of Patent: July 24, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventor: Roger A. Penne
  • Patent number: 4395453
    Abstract: A fire and heat resistant partition having a plurality of lamina between a first side and an opposing second side is provided to protect an object adjacent the first side from a fire or heat generating source adjacent the second side, the first lamina being formed at least partially of aluminum. The first lamina is bonded to at least one ply that is formed from multiple laminae of fibrous material which are bonded to an intermediate lamina of predetermined thickness formed at least partially of aluminum.
    Type: Grant
    Filed: September 11, 1981
    Date of Patent: July 26, 1983
    Assignee: Olin Corporation
    Inventors: Ellwood L. Lines, Jr., Douglas A. Farmer, Jr.
  • Patent number: 4391875
    Abstract: The abrasion resistance and tensile strength of asbestos is significantly improved by the addition of significant amounts of metal oxides, such as iron oxide, under conditions to provide at least some surface bonding of the oxides to the surface of the asbestos. The oxides are preferably added during formation of bodies from asbestos dispersions and also impart color to the final product.
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: July 5, 1983
    Assignee: RM Industrial Products Company, Inc.
    Inventors: Byeong H. Jo, Jerry Zucker
  • Patent number: 4338374
    Abstract: A fireproofing material for application to flammable surfaces is based on an alkali metal silicate solution containing a non-ionic surfactant in combination with an alkali metal tri-silicate powder. The composition according to the invention is easily applicable to plane surfaces with ordinary tools, for example, spatulas, yet will not run either when applied or when subjected to flame.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: July 6, 1982
    Assignee: Woellner-Werke
    Inventor: Rudolf P. Neser
  • Patent number: 4263048
    Abstract: A self-hardening composition consists essentially of 3-5% by weight of an alkaline earth metal chloride, 0.5-1.5% by weight of calcium metasilicate, 0.5-1.5% by weight of sodium fluorosilicate, 30-40% by weight of sodium silicate, 0.02-0.04% by weight of aluminum silicate clay and water. Composites made therefrom can include expanded aggregate material and/or reinforcing fibers, as extenders, or to impart control over the open curing time to preset requirements.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: April 21, 1981
    Assignee: High Efficiency Insulation Technologies, Inc.
    Inventor: Dennis J. Hacker
  • Patent number: 4255477
    Abstract: An artificial lumber board comprises a plurality of elongated wood strips having medial body portions of different thicknesses and tapered tip end portions being thinner and more flexible than the medial portions wherein the wood strips are aligned longitudinally in the board and compressed. The compressed wood strips lap and bend over one another to form generally continuous sinuous wood grain-like structures extending along the board with the tapered tip portions providing generally point contact fitting of the wood strips with one another reducing the presence of void spaces in the board.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: March 10, 1981
    Inventor: John A. Holman
  • Patent number: 4212920
    Abstract: Fireproofing composition comprising sodium silicate, gum arabic (or other gum) and a water dispersible polymer.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: July 15, 1980
    Inventor: Winthrop W. Seamans
  • Patent number: 4152198
    Abstract: Paper and paperboard made of felted cellulose fibers are chemically modified by applying to them an isopropenyl ester containing a catalytic amount of an acid catalyst and then heat curing the treated product. The process imparts water repellancy to the paper products with a very low degree of add-on, but with a very high degree of retention of tensile strength. The products also have excellent printability, are resistant to boiling water, and retain their opacity after exposure to water.
    Type: Grant
    Filed: February 15, 1978
    Date of Patent: May 1, 1979
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Samuel Serota, Leonard S. Silbert, Gerhard Maeker
  • Patent number: 4133933
    Abstract: An electrosensitive recording sheet consists of an electroconductive material of cuprous iodide, an electrosensitive color forming material, a binder and a support. A color forms in the recording sheet in response to an electric signal when an electric current flows therein. The cuprous iodide is whitened by adding an alkaline substance thereto, so as to only slightly increase the resistance of the cuprous iodide and to increase the contrast of recorded mark and the ordinary appearance of the recording sheet.
    Type: Grant
    Filed: June 22, 1976
    Date of Patent: January 9, 1979
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoichi Sekine, Wataru Shimotsuma, Shigeru Tsubusaki
  • Patent number: 4122236
    Abstract: An elongated board of artificial lumber having a length greater than the width and thickness comprising a mixture of irregularly shaped elongated splinters of wood substantially aligned along the length of the board; a substantial portion of the mixture including splinters from about 2" to 10" long; a sealant coating the surface of the splinters; an adhesive carried on the splinters with the sealant restricting the penetration of the adhesive into the splinters so as to produce hardened layers between the splinters for holding the splinters in an interlocking configuration.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: October 24, 1978
    Inventor: John A. Holman