Patents Examined by Harry Wong, Jr.
  • Patent number: 4663386
    Abstract: A moldable composition which comprises a novel random bromostyrene-containing copolymer and a flame-retardant synergist is disclosed. The molded composition exhibits at least a 94V-1 classification when tested in accordance with Underwriters' Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: May 5, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Patent number: 4650843
    Abstract: When trifluoroethyl methacrylate, hexafluoroisopropyl methacrylate, pentafluoro-n-propyl methacrylate and/or pentafluoro-n-butyl methacrylate which are fluorine-containing monomers, are added to a conventional monomer mixture for producing a soft contact lens, the resulting soft contact lens has the same optical properties and elasticity as conventional soft contact lenses have, and is very superior to the conventional ones in resistance to deposit and in shape stability.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: March 17, 1987
    Assignee: Hoya Lens Corporation
    Inventors: Yuuichi Yokoyama, Eiichi Masuhara, Yoshinori Kadoma, Niro Tarumi, Makoto Tsuchiya
  • Patent number: 4644025
    Abstract: Compositions each comprising a copolymer of a specific allylic or (meth)acrylic compound of an iodine-substituted benzoic acid derivative and a comonomer have a refractive index n.sub.D.sup.20 of at least 1.58 and an Abbe's number of at least 28 and are excellent starting materials for the production of high quality lenses.
    Type: Grant
    Filed: June 19, 1985
    Date of Patent: February 17, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Teruo Sakagami, Yasufumi Fujii, Naohiro Murayama
  • Patent number: 4644041
    Abstract: Poly(methylmethacrylate) polymer particles of substantially increased average particle diameter are prepared by suspension polymerization in a medium comprising an alkane and a chlorinated hydrocarbon, e.g. carbon tetrachloride, in relative proportions chosen so as to provide buoyancy to the polymer particles so formed.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: February 17, 1987
    Assignee: The University of Toronto Innovations Foundation
    Inventors: Mitchell A. Winnik, Brett Williamson
  • Patent number: 4640966
    Abstract: A fluoroolefin copolymer having an inherent viscosity of from 0.05 to 2.0 dl/g and composed of(I) 10 to 70 mole % of monomeric units derived from a fluoroolefin represented by the general formula ##STR1## wherein X is H, Cl, F, CF.sub.3, OCF.sub.3 or OC.sub.3 F.sub.7, (II) 5 to 60 mole % of monomeric units derived from a vinyl carboxylate represented by the general formula ##STR2## wherein R.sub.1 represents an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 17 carbon atoms,(III) 5 to 70 mole % of monomeric units derived from a vinyl ether having an alkyl group with 1 to 8 carbon atoms, and(IV) 0 to 30 mole % of monomeric units derived from a hydroxyl-containing vinyl ether represented by the general formula ##STR3## wherein R.sub.2 represents an alkylene group having 1 to 6 carbon atoms.
    Type: Grant
    Filed: November 5, 1985
    Date of Patent: February 3, 1987
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Tomomasa Mitani, Ichiro Mihata
  • Patent number: 4639497
    Abstract: Tetrafluoroethylene fine powder resins are described which have surprisingly high extrusion pressures and molecular weights which make them useful in post-paste extruded stretching operations. The resins are made by using a manganese triacetate/selected reducing agent polymerization initiator and controlling its rate of addition.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: January 27, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Alan C. Knight, Satish C. Malhotra
  • Patent number: 4639478
    Abstract: The present invention relates to 2,3,2',3'-bis-morpholine derivatives corresponding to the formula ##STR1## The present invention also relates to a process for the preparation of these derivatives and to their use as hydrolysis protective agents for synthetic polymers containing ester groups and/or carbonate groups. Preferred synthetic polymers are polyurethanes.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: January 27, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Haas, James M. Barnes, Wilhelm Goyert
  • Patent number: 4638041
    Abstract: A polymer comprising fluorooxyalkyl vinyl ether of the formula: ##STR1## wherein n is an integer of 0 to 5.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: January 20, 1987
    Assignee: Daikin Industries, Ltd.
    Inventors: Akira Ohmori, Nobuyuki Tomihashi, Hiroshi Inukai, Kazuhiro Nakai
  • Patent number: 4636539
    Abstract: Cyanoacrylate adhesive compositions which employ calixarene compounds as additives give substantially reduced fixture and cure times on de-activating substrates such as wood. The calixarene compounds are preferably employed at levels of about 0.1-1% by weight of the composition. The calixarene compounds particularly useful in this invention may be represented by the formula: ##STR1## where R.sup.1 is alkyl, alkoxy, substituted alkyl or substituted alkoxy; R.sup.2 is H or alkyl; and n=4, 6, or 8.The compositions are further characterized by a thickener component, which may suitably be selected from various polymers such as poly(methyl methacrylate), methacrylate type copolymers, acrylic rubbers, polyvinyl acetate and poly(.alpha.-cyanoacrylate) or silicas treated with polydialkylsiloxanes or trialkylsilanes.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: January 13, 1987
    Assignee: Loctite (Ireland) Limited
    Inventors: Stephen J. Harris, M. Anthony McKervey, David P. Melody, John Woods, John M. Rooney
  • Patent number: 4636549
    Abstract: A tetrafluoroethylene copolymer composition in which the modifying comonomer is a fluorinated alkyl ethylene of the formulaCF.sub.3 (CF.sub.2).sub.3 CH.dbd.CH.sub.2,wherein the units of acid comonomers are located in the interior of the copolymer.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: January 13, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Subhash V. Gangal, Satish C. Malhotra
  • Patent number: 4634791
    Abstract: Compounds of the formula ##STR1## are suitable as curing accelerators which can be incorporated into ethylenically unsaturated, cold-curable resins.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: January 6, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut-Martin Meier, Rolf Dhein, Jens Winkel, Gerhard Klein, Werner Kloker
  • Patent number: 4634731
    Abstract: A moldable composition which comprises a novel random bromostyrene-containing copolymer, thermoplastic resin, preferably polycarbonate and a flame retardant synergist is disclosed. The molded composition exhibits at least a 94 V-1 classification when tested in accordance with Underwriters Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: January 6, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Patent number: 4634754
    Abstract: A fluorine-containing copolymer comprising structural units of the formula (a):--CH.sub.2 --CHF-- (a)structural units of the formula (b): ##STR1## and structural units of the formula (c): ##STR2## wherein X is --H or --F, Y is --OH, --COOH or ##STR3## l is 0 or an integar of 1, m is 0 or an integar of 1 to 6 and n is 0 or an integer of 1 to 4, provided that Y is --COOH when n is 0. The copolymer has a good solubility to solvent and is cross-linkable, and the composition containing the copolymer can be cured at room temperature, and provides a film having an excellent chemical resistance, weatherability, stain resistance, heat resistance and high frictional electrification property.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: January 6, 1987
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Akira Ohmori, Nobuyuki Tomihashi, Yoshiki Shimizu
  • Patent number: 4631326
    Abstract: Disclosed is a curable fluorine-containing copolymer, comprising 25-75 mol % of first repeating units which originate from chlorotrifluoroethylene, 10-70 mol % of second repeating units which originate from a vinyl or isopropenyl ester of fatty acid, such as vinyl acetate or isopropenyl acetate, 3-40 mol % of third repeating units which originate from a hydroxyl-containing allyl ether such as ethylene glycol monoallyl ether and 0-20 mol % of optional repeating units which originate from an optional monomer such as an acrylate. This copolymer possesses favorable properties characteristic of fluoro-resins, is soluble in organic liquids and is curable with a compound having a functional group that reacts with active hydrogen, such as a polyisocyanate. A coating liquid composition obtained by adding such a curing agent to a solution of the copolymer in an organic solvent is of wide use for painting and other coating purposes.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: December 23, 1986
    Assignee: Central Glass Company Limited
    Inventors: Toshio Koishi, Takashi Yasumura
  • Patent number: 4631309
    Abstract: Equipment for the exploration and/or production of petroleum and natural gas having elastomeric components have high resistance to materials encountered if the elastomeric components are shaped from a hydrogenated butadiene-acrylonitrile copolymer with a residual double bond content less than 1% and unhydrogenated nitrile groups.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: December 23, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Thormer, Friedrich Leibbrandt, Zsolt Szentivanyi, Hartmuth Buding
  • Patent number: 4631325
    Abstract: A curable resinous composition is made comprising an anaerobically polymerizable liquid material, and a curing agent comprising: a complex of a free radical initiator, and an accelerator, said accelerator comprising a complex of a tertiary amine and sulfur dioxide.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: December 23, 1986
    Assignee: Westinghouse Electric Corp.
    Inventors: John R. Ray, Michael A. Williamson, James D. B. Smith
  • Patent number: 4629755
    Abstract: There are provided a radical polymerizing composition giving a cured resin having excellent elasticity which comprises a mixture of two or more kinds of monomethacrylic acid esters having specific structure at specific mixing ratio and organic peroxide, and more particularly an anaerobic liquid gasket having excellent sealing properties, pressure resistance and good storage stability which comprises these polymerizing composition, filler, anaerobic curing accelerator and stabilizer.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: December 16, 1986
    Assignee: Okura Kogyo Kabushiki Kaisha
    Inventors: Kunio Kanaoka, Takanori Okamoto, Hideaki Matsuda
  • Patent number: 4627938
    Abstract: [2, 5, 8, 11]-tetraalkyl-[2, 5, 8, 11]-tetracyano-cis-6a' carboxy, 12a' oxoacide-3,4:9,10 bisdiazobicyclooctane compounds are disclosed. In one embodiment, the compounds are capable of initiating free radical polymerization and are well suited for the preparation of polymers having block type structures.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: December 9, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Patent number: 4626593
    Abstract: Vinyl pyridines including vinyl stilbazole materials and vinyl styrylpyridine oligomer materials are disclosed. These vinylpyridines form copolymers with bismaleimides which copolymers have good fire retardancy and decreased brittleness. The cure temperatures of the copolymers are substantially below the cure temperatures of the bismaleimides alone. Reinforced composites made from the cured copolymers are disclosed as well.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: December 2, 1986
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: John A. Parker, Alvin H. Heimbuch, Ming-Ta S. Hsu, Timothy S. Chen
  • Patent number: 4626573
    Abstract: A moldable composition which comprises a novel random N-(brominated or chlorinated phenyl) maleimide-containing copolymer, a thermoplastic resin, preferably, polycarbonate and a flame retardant synergist is disclosed. The molded composition exhibits at least a 94 V-1 classification when tested in accordance with Underwriters Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: December 2, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes