Patents Examined by Allan Lieberman
  • Thrombin inhibitor and preparation and use thereof
    Patent number: 4379142
    Abstract: Thrombin inhibitor comprising a glycoprotein of a molecular weight of 68,000 to 69,000 Dalton and an isoelectric point of pH 4.5, and is further characterized in that it inhibits thrombin in the presence of dextran sulfate at least twice as strongly as in the presence of heparin, differs immunologically from antithrombin III, and does not inhibit factor Xa, plasmin and trypsin.
    Type: Grant
    Filed: October 8, 1981
    Date of Patent: April 5, 1983
    Assignee: Boehringer Mannheim GmbH
    Inventors: Hans Port, Jurgen Schrenk, Peter Wunderwald
  • Process for the preparation of blood plasma fractions
    Patent number: 4379083
    Abstract: A precipitation process for the preparation of blood plasma constituents is disclosed, wherein the plasma to be fractionated and the precipitant are circulated in a closed system.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: April 5, 1983
    Assignee: Behringwerke Aktiengesellschaft
    Inventors: Jurgen Falke, Helmut Geiger, Wolfgang Grunbein, Heinz-Georg Kandel
  • Azeotropic solvent composition
    Patent number: 4378303
    Abstract: An azeotropic solvent composition comprising about 64.6 to 89.0% by weight of tetrachlorodifluoroethane, about 3.7 to 34.2% by weight of an alcohol having carbon atoms of 1 to 5 and about 1.2 to 7.3% by weight of nitroethane.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: March 29, 1983
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Iwao Hisamoto, Chiaki Maeda, Yukio Omure
  • Polymer foams produced by electron beam radiation
    Patent number: 4378278
    Abstract: A process for forming a polymeric foam comprising mixing a liquid multi-functional acrylate monomer and a liquid nonionic fluoronated alkyl-ester surfactant, foaming the surfactant monomer mixture and passing the foamed surfactant monomer mixture under a source of electron beam radiation to polymerize the monomer into a polymeric foam structure.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: March 29, 1983
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: James R. Allaway, Daniel R. Bloch, Michael P. Fischer
  • Discharge reserve for negative impregnated sinter tape electrodes
    Patent number: 4378301
    Abstract: Negative sintered foil electrodes for gas-tight Ni/Cd storage batteries can be provided with a specific discharge reserve by subjecting them to a partial chemical reduction before they are installed. This is performed upon the moving, impregnated sinter tape by immersing it in or spraying it with a strongly reducing agent dissolved in water or any other solvent, preferably alkali boranate. In a subsequent drying step, the Cd so formed is permanently fixed and protected through intentional surface oxidation.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: March 29, 1983
    Assignee: Varta Batterie A.G.
    Inventors: Eckart Buder, Friedrich-Wilhelm Busemann
  • Molding material
    Patent number: 4378444
    Abstract: Use of a selected sulfonamide has been found to reduce mold deposits and to lower volatility without impairing crystallization rates of polyethylene terephthalate molding blend which contains an ionic hydrocarbon copolymer or ionic salt of a hydrocarbon acid, over polyethylene terephthalate blends which contained the ionic component and other additives.
    Type: Grant
    Filed: May 12, 1982
    Date of Patent: March 29, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sumner A. Barenberg, Frank P. Gay
  • Defoamer composition and use thereof
    Patent number: 4377493
    Abstract: A defoamer comprised of silica having hydrophobic surfaces dispersed in a water insoluble hydrophobic organic liquid, wherein the silica has a surface area of no greater than 0.1 m.sup.2 /g and the hydrophobic silica comprises in excess of 25 wt. percent of the composition.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: March 22, 1983
    Assignee: Drew Chemical Corporation
    Inventors: Francis J. Boylan, Clemmon Porter, Olga D. Bruno
  • Solvent resistant polymeric composition
    Patent number: 4377658
    Abstract: A polymeric composition having improved resistance to environmental flex cracking, solvent attack, abrasion and ozone attack comprises the blend of two different radial monoalkenyl arene-conjugated diene block copolymers, high density polyethylene, ethylene-vinyl acetate copolymer, hydrocarbon extending oil, polystyrene resin and filler.
    Type: Grant
    Filed: January 22, 1982
    Date of Patent: March 22, 1983
    Assignee: Shell Oil Company
    Inventor: James H. Collins
  • Compression bandage
    Patent number: 4377160
    Abstract: A self-sticking compressive bandage effective for cooling and compressing an injured body part of a human being or an animal. The bandage comprises a flexible, open-cell, synthetic resin foam impregnated with a hydrous gel. The bandage is effective to cool the skin by evaporative cooling and by refrigeration caused by contact of the gel with the skin.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: March 22, 1983
    Inventor: John W. Romaine
  • Cured rubber skim stocks having improved metal adhesion and metal adhesion retention by use of organo-metal complexes and halogenated polymer
    Patent number: 4376838
    Abstract: This invention is directed to an improved rubber skim stock composition and a product containing the skim stock having improved adhesion and adhesion retention with metallic reinforcement cords such as brassed steel. The invention composition comprises a conventional vulcanizable rubber skim stock, at least one halogenated polymer and at least one organo complex of cobalt or nickel. Tests conducted with brass-plated and zinc-plated steel cords showed improved metal adhesion and metal adhesion retention with use of the improved rubber skim stock of this invention when compared to control formulations.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: March 15, 1983
    Assignee: The Firestone Tire & Rubber Company
    Inventors: James A. Davis, Robert C. Koch
  • Copolymerization of unsaturated polyester resins
    Patent number: 4376841
    Abstract: A process for copolymerizing unsaturated polyester resins is disclosed wherein said resin is copolymerized in the presence of a perketal and an acid or acid-releasing compound.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: March 15, 1983
    Assignee: Akzona Incorporated
    Inventor: Lodewijk Roskott
  • Method of producing milk protein isolates and milk protein/vegetable protein isolates and compositions of same
    Patent number: 4376072
    Abstract: Proteins lacking isoelectric points are precipitated out of solution by combining with the solution a protein (i.e. one or more proteins) having an isoelectric point, alkalizing the mixture to a pH of about 9-11, acidifying the mixture to a pH of about 2-4, and adjusting the pH of the mixture to the isoelectric point of the protein to precipitate novel protein complexes.A novel protein-free, undenatured dairy whey valuable for lactose crystallization and alcohol production is also obtainable.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: March 8, 1983
    Assignee: New Zealand Milk Products, Inc.
    Inventor: Philip B. Connolly
  • Process for the removal of tritium from the product solutions obtained by the Purex process
    Patent number: 4374762
    Abstract: A process for the removal of tritium from the product solutions obtained in the reprocessing of irradiated nuclear fuels by the Purex process comprising a plurality of series-connected extraction cycles having an organic solvent.
    Type: Grant
    Filed: June 4, 1980
    Date of Patent: February 22, 1983
    Assignee: Uhde GmbH
    Inventors: Rainer Olinger, Andre van den Bossche
  • Stable dispersions of fortified rosin
    Patent number: 4374673
    Abstract: Disclosed are novel aqueous dispersions which consist essentially of finely-divided fortified rosin particles; a water-soluble or water-dispersible cationic starch dispersing agent for the finely-divided fortified rosin particles; an anionic surface-active agent; and water. The novel aqueous dispersions are used to size paper.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: February 22, 1983
    Assignee: Hercules Incorporated
    Inventor: Paul H. Aldrich
  • Particle size control of SBR/carbon black powder
    Patent number: 4374941
    Abstract: There is disclosed a process for the production of tack-free, pourable, filler containing elastomer powder which comprises(a) dispersing a carbon black filler in water;(b) mixing the thus dispersed carbon black filler with an elastomer latex;(c) coagulating the thus produced mixture of elastomer latex and carbon black with a two-stage coagulation solution;(d) partitioning the thus coagulated suspension with a coating resin; and(e) filtering, washing and drying of the resultant powder, the improvement comprising using as a coating resin a mixture of a styrene/butadiene resin and a styrene/.alpha.-methylstyrene or a polystyrene resin wherein the weight ratio of the styrene/butadiene resin to the styrene/.alpha.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: February 22, 1983
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Paul H. Sandstrom
  • Macromolecular biologically active collagen articles
    Patent number: 4374121
    Abstract: Macromolecular reconstituted collagen is prepared by treating natural insoluble collagen with an aqueous solution comprised of an alkali sulfate salt and an alkali metal hydroxide for at least 48 hours to saponify fats suspended within the natural insoluble collagen. The fat free collagen is then treated with an aqueous solution comprised of an alkali metal sulfate for at least four hours to stabilize the interfibular bonds between individual polypeptide chains. The collagen is then dissolved in an aqueous acid solution and frozen at a rate of -20.degree. C./hour. The frozen collagen is vacuum dried at 10.sup.-3 to 10.sup.-5 torr for at least 16 hours to produce a biologically active collagen article. Various biologically active materials may be added to the aqueous acid solution prior to freezing. The collagen product may then be implanted into an animal or the like and the medication slowly released.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: February 15, 1983
    Assignee: Seton Company
    Inventor: Gheorghe Cioca
  • Implantation materials and a process for the production thereof
    Patent number: 4373217
    Abstract: An implantation material comprises a polymeric base of an acrylate, a polymethacrylate, a copolymer of an acrylate and a methacrylate or a mixture thereof, and 5-35% by weight of resorbable tricalcium phosphate of a particle size of 50-300 .mu.m, and an available pore volume of less than 0.1 ml/g.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: February 15, 1983
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventor: Klaus Draenert
  • Means and methods for purifying Clq, Clr and Cls
    Patent number: 4374061
    Abstract: A novel resin is provided for use in chromatography to enable purification of plasma proteins Clq, Clr and Cls from Cohn Fraction I and other materials. An improved method results in obtaining substantially all of these materials from Cohn Fraction I or other media. The components of complement thus obtained are highly purified and retain full biological activity.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: February 15, 1983
    Assignee: Center For Blood Research, Inc.
    Inventor: David H. Bing
  • Silicone coating for unprimed plastic substrate and coated articles
    Patent number: 4373061
    Abstract: A silicone hardcoat composition for plastic substrates is provided in the form of an aqueous cohydrolyzate of chemically combined siloxy units, organosiloxy units and siloxy units having from 1-3 chemically combined UV stabilizing organic groups attached to silicon by carbon-silicon bonds. Thermoplastic substrates treated with such silicone hardcoat compositions are also provided.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: February 8, 1983
    Assignee: General Electric Company
    Inventor: Ta-Yen Ching
  • Elastomer compositions
    Patent number: 4373069
    Abstract: Tires having good grip on wet road surfaces and low frictional resistance to rolling on the road surface have treads formed from vulcanisates of elastomer compositions comprising a major component consisting of one or more polymers having a glass transition temperature (Tg) of minus 50.degree. C. or lower temperature, and a minor component consisting of one or more polymers having a glass transition temperature of ambient temperature or higher temperature. The major component can consist of one or more rubbery polymers selected from natural rubbers, polybutadienes synthetic polyisoprenes and rubbery styrene-butadiene copolymers; and the minor component can consist of a resinous styrene-butadiene co-polymer.
    Type: Grant
    Filed: August 28, 1979
    Date of Patent: February 8, 1983
    Assignee: Dunlop Limited
    Inventors: Robert Bond, Robert J. Blythe