Patents Examined by LaVonda DeWitt
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Patent number: 5326797Abstract: A roofing system incorporates a fire resistant asphalt composition comprising a thermoplastic elastomer modified bitumen, a filler, a brominated diphenyl ether, antimony oxide, and zinc borate. The asphalt composition is utilized with and impregnated into at least one layer of fiberglass or polyester mat. Preferably at least two layers are utilized wherein an upper layer is a fiberglass mat and a lower layer is a polyester mat, both mat layers being impregnated with the composition. In its preferred formulation, the asphalt composition comprises, in weight percent, about 30% to 90% bitumen, about 4% to 16% styrene-butadiene-styrene copolymer, about 10% to 40% filler, and up to about 20% each of the brominated diphenyl ether, the antimony oxide, and the zinc borate. The preferred brominated diphenyl ether is decabromodiphenyl ether.Type: GrantFiled: August 31, 1992Date of Patent: July 5, 1994Assignee: GS Roofing Products Company, Inc.Inventors: Harold Zimmerman, David Ploense, Robert Lilleston, Mario Butera
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Patent number: 5321064Abstract: A biodegradable interpolymer and composition is prepared by the reactive blending of a synthetic polymer having functional groups with a naturally occurring biodegradable polymer such as a carbohydrate or protein compound. During reactive blending, the synthetic polymer can undergo a chemical reaction with the biodegradable natural polymer which results in covalent and physical bonding between the two polymers, thereby forming an interpolymer. By this process, a biodegradable interpolymer composition is produced that is suitable for molding various articles.Type: GrantFiled: May 12, 1992Date of Patent: June 14, 1994Assignee: Regents of the University of MinnesotaInventors: Utpal R. Vaidya, Mrinal Bhattacharya
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Patent number: 5319015Abstract: An aqueous release agent for the production of polyurethane moldings and more particularly of polyurethane foam moldings, is provided, which in combination with a release substance contain one or more specific polyvinyl alcohols. As such release substance the release agent preferably contains at least in part one or more unsaturated oligomeric or polymeric hydrocarbons with a molecular weight of at least 500 and iodine numbers of at least 60 optionally in the presence of foam stabilizers suitable for polyurethane systems.Type: GrantFiled: October 26, 1992Date of Patent: June 7, 1994Inventors: Manfred Gebhardt, Jiri Beranek, Friedrich Knochel
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Patent number: 5317047Abstract: This invention relates to a composition which may be used in particular for manufacturing stoppers and to a process for manufacturing same.A composition is principally constituted by particles of ligneous plant matters such as natural cork or wood, by a plastics material of closed cellular structure such as expansible microspheres, and by a binding agent; a stopper comprises at least one active part constituted by a composition according to the invention, and said binding agent is a glue suitable for contact with foodstuffs, for example of the polyurethane or acrylic type.The technical domain of the invention is that of the cork industry.Type: GrantFiled: September 22, 1992Date of Patent: May 31, 1994Assignee: Bouchons A Champagne Sabate, S.A.Inventors: Bernard Sabate, Joel Masse, Gerard Jeanty
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Patent number: 5317037Abstract: A composition of matter comprising at least 2% by weight of a fibrous material and at least 30% by weight of a binding material such that the composition can be melt-molded into articles which have mechanical strength sufficient for their intended uses and which are biodegradable. The binding material is formed of natural substance and may also include up to 30% by weight synthetic, water-soluble polymer. The fibrous material may be cellulose and/or mineral fibers which provide the attributes of reinforcement and degradability. The composition may further include up to 20% by weight liquid or solid plasticizer which serves to lower melt viscosity and add toughness to the composite material.Type: GrantFiled: September 9, 1991Date of Patent: May 31, 1994Assignee: Bio Dynamics, Ltd.Inventors: Casey V. Golden, Ronald L. Turner, John A. Elverum, Ray L. Hauser
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Patent number: 5312858Abstract: A construction article manufactured from recycled waste materials is provided which efficiently utilizes a variety of ordinary refuse materials in providing a high-strength article. The article may be constructed of either ash as well as unburnt material filler and tack combined with a plastic binder, or alternatively metal, glass, paper and cloth may constitute the filler to be combined with the plastic binder. The plastic binder may be of a variety of polymers which may be melted to fuse the waste material together. The article is preferably provided with complimentary recesses and projections on opposite sides whereby similar articles may be combined to interlock with one another and bonded by the use of an organic solvent.Type: GrantFiled: June 21, 1993Date of Patent: May 17, 1994Inventor: Virgil Folsom
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Patent number: 5308897Abstract: A composition of matter including a polymeric material which is either a plastic having carbon to carbon linkages or a binary blend of the plastic and starch, in which the plastic is at least 25% by weight of the binary blend; and an organic peracid compound dispersed in the polymeric material, the quantity of the peracid compound being 0.1 to 10% by weight of the polymeric material.Type: GrantFiled: January 14, 1993Date of Patent: May 3, 1994Assignee: Industrial Technology Research InstituteInventors: Hung-Yuan Hsu, Shu-Chieh Liuo, Shu-Fang Jiang, Jian-Hong Chen, Ho-May Lin, Herng-Dar Hwu, Muh-Lan Chen, Mao-Song Lee, Teh Hu
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Patent number: 5304592Abstract: Granite-like plastics useful in all forms of molding and thermoforming are disclosed. The granite-like plastics include a multiplicity of particulates formed of a thermoplastic and thermoset plastic combination which are suspended within a clear or translucent matrix of the same thermoplastic material as the particulates. The particulates are maintained in suspension due to their isopynic density with the matrix. Of particular importance are granite-like acrylics that can be used in place of standard acrylics.Type: GrantFiled: May 14, 1992Date of Patent: April 19, 1994Inventor: Akbar Ghahary
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Patent number: 5304616Abstract: Disclosed are stabilizer compositions comprising specific mixed partial salts of a lower alkyl vinyl ether-maleic acid copolymer wherein said partial salts containing from about 15% to about 40% free acid, and as the cationic salt function:(a) from about 0.1% to about 80% strontium cations; and(b) from about 0.1% to about 65% zinc cationsof the total initial carboxyl groups reacted. Also disclosed are denture stabilizing compositions comprising these mixed partial salts, as well as denture stabilizing compositions comprising a safe and adhesively effective amount of two or more denture adhesive components wherein one of said denture adhesive components is the mixed partial salt(s) of the present invention.Type: GrantFiled: October 22, 1992Date of Patent: April 19, 1994Assignee: The Procter & Gamble CompanyInventors: Jayanth Rajaiah, Abel Saud, Bruce J. MacKay
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Patent number: 5302628Abstract: A denture adhesive which is useful in aiding in the retention of dentures to the oral mucosa constitutes a mixture of polyacrylic acid and hydroxy compound of sufficiently high molecular weight to be solid at room temperature. The combination can be used in the form of a powder or can be mixed in an oil base for application as a cream or liquid. The composition can also include hydration enhancers and pH adjustment agents.Type: GrantFiled: February 3, 1992Date of Patent: April 12, 1994Assignee: Block Drug Company, Inc.Inventors: Richard Lim, Robert Leone
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Patent number: 5296513Abstract: Disclosed is a process for producing dental polymeric shaped articles resistant to the adhesion of plaque which comprises the steps of shaping and curing a dental composition containing a monomer having at least one (meth)acryloyloxy group, and bringing the cured product into contact with a halogen or a halogen compound. Also disclosed is a dental composition comprising a monomer having at least one (meth)acryloyloxy group and a polymerization initiator, which is characterized by having added thereto at least one of a halogen and a halogen compound. When cured, this dental composition produces dental polymeric shaped articles resistant to the adhesion of plaque.Type: GrantFiled: July 20, 1992Date of Patent: March 22, 1994Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hitoshi Ige, Nobuhiro Mukai, Naoto Ohsuga
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Patent number: 5292782Abstract: A thermoplastic polymeric composition including starch, at least one synthetic thermoplastic polymer and a plasticiser in which the plasticiser is at least one compound selected from the group consisting of:a) polyols formed by from 1 to 20 repeating hydroxylated units each including from 2 to 6 carbon atoms, provided that when the polyol is formed by only one repeating unit it has at least 4 carbon atoms, with the exclusion of sorbitol,b) ethers, thioethers, inorganic and organic esters, acetals and amino-derivatives of polyols formed by from 1 to 20 repeating hydroxylated units each including from 2 to 6 carbon atoms with the exclusion of acetic esters of glycerine, triethyl citrate and tributyl citrate,c) polyol reaction products having from 1 to 20 repeating hydroxylated units each including from 2 to 6 carbon atoms with chain extenders;d) polyol oxidation products having from 1 to 20 repeating hydroxylated units each including from 2 to 6 carbon atoms including at least one aldehydic or carboxylic functiType: GrantFiled: December 28, 1992Date of Patent: March 8, 1994Assignee: Novamont S.p.A.Inventors: Catia Bastioli, Vittorio Bellotti, Alessandro Montino
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Patent number: 5290350Abstract: Physically/mechanically improved insulating shaped articles such as panels or plates, adapted to withstand very elevated temperatures, comprise an inorganic fiber matrix, e.g., a matrix of ceramic fibers, such inorganic fiber matrix containing at least one inorganic filler material, e.g., a mineral wool and/or kaolin, and a consolidating of a binder therefor which comprises admixture of a xanthan gum and a cationic starch.Type: GrantFiled: November 20, 1991Date of Patent: March 1, 1994Assignee: Rhone-Poulenc ChimieInventors: Marie-Madeleine Besnard, Fabrice Brenner, Magali Knipper
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Patent number: 5288772Abstract: A fiber-reinforced thermoplastic composition for producing composite structural members and a method for making same is provided. The composition is made by combining a thermoplastic resin with pre-treated high moisture cellulosic materials, such as discarded newspaper, having lignin contained therein. Moisture treatment of the cellulosic materials exhibit improvements over composites using dry cellulosic materials. The composite composition may then be extruded or compression molded into various articles of manufacture.Type: GrantFiled: June 23, 1992Date of Patent: February 22, 1994Assignee: Clemson UniversityInventor: David N.-S. Hon
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Patent number: 5286769Abstract: Corrugating adhesive compositions comprising soluble high amylose starch as the carrier starch may be prepared as a one-piece, dry mixture that can be dispersed in water at 25.degree. to 55.degree. C. and applied to paperboard without further preparation steps. The corrugating adhesives may be prepared without alkali, and used at any pH.Type: GrantFiled: April 19, 1993Date of Patent: February 15, 1994Assignee: National Starch and Chemical Investment Holding CorporationInventors: James Eden, James Kasica, Craig Leake, Norman Lacourse, Paul Altieri
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Patent number: 5286764Abstract: This invention relates to a process of preparing a high polymer load dispersion of an innocuous adhesive polymeric resin in an oil base containing between 0.01 and about 5 wt. % of a non-toxic, food grade surfactant and to coating and affixing a denture material coated with said adhesive to the gums for increased strength and extended holding power.Type: GrantFiled: July 20, 1992Date of Patent: February 15, 1994Assignee: ISP Investments Inc.Inventor: William E. Prosise
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Patent number: 5286843Abstract: A process is disclosed for improving the water-whitening resistance of a pressure sensitive adhesive containing an aqueous latex emulsion and water-soluble ions by removing the water-soluble ions and adjusting the pH of the pressure sensitive adhesive formulation to at least about 6.0. The preferred method of removing the water-soluble ions is to contact either the aqueous latex emulsion, the formulated pressure sensitive adhesive containing the aqueous latex emulsion, or both with ion exchange resin. The product produced by the process is also disclosed.Type: GrantFiled: May 22, 1992Date of Patent: February 15, 1994Assignee: Rohm and Haas CompanyInventor: Timothy G. Wood
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Patent number: 5284885Abstract: The present invention comprises aqueous nitrocellulose compositions and methods of their making. The compositions of the invention provide coatings and can be employed as nail coatings, protective coatings and non-wax polishes.Type: GrantFiled: September 29, 1992Date of Patent: February 8, 1994Assignee: Agri-Film, Inc.Inventor: Samuel A. Nehra
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Patent number: 5278206Abstract: Scatterable binder in pulverized form, for binding spilled liquids, comprisinga) superabsorbers,b) Kieselguhr, peat, sawdust, wood meal, wood wool, straw, paper fibers, pulp or plastics in fibrous or milled form andc) polyglycol,the content of polyglycol being up to 30% by weight and wherein said scatterable binder is in pulverized form and is a means for binding spilled liquids.Type: GrantFiled: November 30, 1992Date of Patent: January 11, 1994Assignee: Cassella AktiengesellschaftInventors: Gerd Gobel, Ferdinand Angerer, Ulrich Riegel
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Patent number: 5278200Abstract: Biocompatible heparin-like material and surfaces thereof are made by co-polymerization of acrylic acid (AA) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) and attaching the copolymer to a suitable substrate or blending the copolymer into a suitable substrate. The material produced also possesses surface slip-properties and some decreased bacterial and platelet adherence.Type: GrantFiled: October 30, 1992Date of Patent: January 11, 1994Assignee: Medtronic, Inc.Inventors: Arthur J. Coury, James R. Keogh, Christopher M. Hobot, Warren W. Howland