Patents by Inventor Kiyohide Matsui

Kiyohide Matsui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing dihalovinylcyclopropanecarboxylates
    Patent number: 4999451
    Abstract: Novel synthesis of dihalovinylcyclopropanecarboxylates, including potent insecticides, are described. The processes begin with the reaction between an alkenol and an orthoester to produce a .gamma.-unsaturated carboxylate, followed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: March 12, 1991
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyoshi Kondo, Kiyohide Matsui, Akira Negishi, Yuriko Takahatakae
  • Process for preparing a highly selective fluorinated anion exchange membrane
    Patent number: 4900420
    Abstract: A process for preparing an anion exchange membrane, which comprises subjecting a carboxylate membrane made of a copolymer having repeating units of the formula: ##STR1## wherein X is F or CF.sub.3, l is an integer of from 0 to 5, m is 0 or 1, n is an integer of from 1 to 5, and p/q is from 4 to 16, and R is an alkyl group, to an acid or base treatment, and then introducing anion exchange groups thereinto.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: February 13, 1990
    Assignee: Tosoh Corporation
    Inventors: Yasuhiro Kurauchi, Toru Seita, Kiyohide Matsui, Kikuo Sugimoto
  • Process for preparing dihalovinylcyclopropanecarboxylates
    Patent number: 4833266
    Abstract: Novel syntheses of dihalovinylcyclopropanecarboxylates, including potent insecticides, are described. The processes begin with the reaction between an alkenol and an orthoester to produce a .gamma.-unsaturated carboxylate, followed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: May 23, 1989
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyoshi Kondo, Kiyohide Matsui, Akira Negishi, Yuriko Takahatake
  • Copolymer, separating membrane made thereof and method for separating charge transfer interactive substance from a liquid mixture containing the same
    Patent number: 4758348
    Abstract: A method for separating a charge transfer interactive substance from a liquid mixture containing such a substance, wherein the separation is conducted by means of a separating membrane made of a copolymer having charge transfer interactive groups.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: July 19, 1988
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyohide Matsui, Kazuhiko Ishihara, Isao Shinohara, Hiroyuki Nishide, Rieko Kogure
  • Poly(disubstituted acetylene)/polyorganosiloxane graft copolymer and membrane for gas separation
    Patent number: 4755561
    Abstract: A membrane for selectively separating gases having high and selective permeability for oxygen and sufficient strength which is capable of extracting and concentrating oxygen in a mixed gases, especially in the air, and is produced from a novel poly(disubstituted acetylene)/polyorganosiloxane graft copolymer where the main chain is composed of poly(disubstituted acetylene) and the side chain is composed of polyorganosiloxane, and the copolymer.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: July 5, 1988
    Assignees: Sagami Chemical Research Center, Tosoh Corporation
    Inventors: Kiyohide Matsui, Yu Nagase, Masaki Uchikura
  • Poly(disubstituted acetylene)/polyorganosiloxane graftcopolymer and membrane for gas separation
    Patent number: 4746334
    Abstract: A membrane for selectively separating gases having high and selective permeability for oxygen and sufficient strength which is capable of extracting and concentrating oxygen in a mixed gases, especially in the air, and is produced from a novel poly(disubstituted acetylene)/polyorganosiloxane graft copolymer where the main chain is composed of poly(disubstituted acetylene) and the side chain is composed of polyorganosiloxane, and the copolymer.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: May 24, 1988
    Assignees: Sagami Chemical Research Center, Tosoh Corporation
    Inventors: Kiyohide Matsui, Yu Nagase, Masaki Uchikura
  • Process for preparing dihalovinylcyclopropanecarboxylates
    Patent number: 4681953
    Abstract: Novel syntheses of dihalovinylcyclopropanecarboxylates, including potent insecticides, are described. The processes begin with the reaction between an alkenol and an orthoester to produce a .gamma.-unsaturated carboxylate, followed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: July 21, 1987
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyoshi Kondo, Kiyohide Matsui, Akira Negishi, Yuriko Takahatake
  • Fluorine-containing graft copolymer and adhesive and composite membrane made thereof
    Patent number: 4666991
    Abstract: A graft copolymer consisting essentially of a main chain polymer having a glass transition temperature (Tg) of at least 30.degree. C. and a graft chain fluorine-containing polymer having a repreating unit of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a lower alkyl group, and R.sup.2 is a polyfluoroalkyl group.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: May 19, 1987
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyohide Matsui, Kazuhiko Ishihara
  • Fluorocarbon polymers and processes for their preparation
    Patent number: 4661231
    Abstract: A fluorocarbon polymer comprising a perfluorocarbon main chain and a pendant chain attached to the main chain, characterized in that the pendant chain has a quaternary ammonium type terminal group.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: April 28, 1987
    Assignees: Toyo Soda Manufacturing Co., Ltd., Sagami Chemical Research Center
    Inventors: Kiyohide Matsui, Yoshiyuki Kikuchi, Tamejiro Hiyama, Etsuko Tobita, Kiyoshi Kondo
  • Fluorocarbon anion exchangers and processes for their preparation
    Patent number: 4659744
    Abstract: A fluorocarbon anion exchanger which is composed of a fluorocarbon polymer comprising a perfluorocarbon main chain and a pendant chain attached to the main chain, characterized in that the pendant chainhas a terminal group represented by the formula: ##STR1##
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: April 21, 1987
    Assignees: Toyo Soda Manufacturing Co., Ltd., Sagami Chemical Research Center
    Inventors: Kiyohide Matsui, Yoshiyuki Kikuchi, Tamejiro Hiyama, Etsuko Tobita, Kiyosi Kondo, Akira Akimoto, Toru Seita, Hiroyuki Watanabe
  • Process for preparing dihalovinylcyclopropanecarboxylates
    Patent number: 4596887
    Abstract: A cyclopropanecarboxylate of the formula ##STR1## is prepared by the reaction of a compound of the formula ##STR2## with an alkoxide in an ether type solvent. R.sup.1, R.sup.2, and R.sup.4 each independently is hydrogen or a hydrocarbon residue, R.sup.3 is an alcohol residue, X is halogen, and A is --CH.sub.2 --CX.sub.3 or --CH.dbd.CX.sub.2.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: June 24, 1986
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyoshi Kondo, Kiyohide Matsui
  • Fluorocarbon polymers and processes for their preparation
    Patent number: 4567206
    Abstract: A fluorocarbon polymer comprising a perfluorocarbon main chain and a pendant chain attached to the main chain, characterized in that the pendant chain has a quaternary ammonium type terminal group.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: January 28, 1986
    Assignees: Toyo Soda Manufacturing Co., Ltd., Sagami Chemical Research Center
    Inventors: Kiyohide Matsui, Yoshiyuki Kikuchi, Tamejiro Hiyama, Etsuko Tobita, Kiyoshi Kondo, Akira Akimoto, Toru Seita, Hiroyuki Watanabe
  • Process for preparing dihalovinylcyclopropanecarboxylic acids
    Patent number: 4500733
    Abstract: A cyclopropanecarboxylic acid of the formula ##STR1## is prepared by the reaction of a compound of the formula ##STR2## with an alkali metal hydroxide or alkaline earth metal hydroxide in an ether type solvent. R.sup.1, R.sup.2, and R.sup.4 each independently is hydrogen or a hydrocarbon residue, R.sup.3 is hydrogen or lower alkyl, X is halogen, and A is --CH.sub.2 --CX, 3 or --CH.dbd.CX.sub.2.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: February 19, 1985
    Assignee: Sagami Chemical ResearchCenter
    Inventors: Kiyoshi Kondo, Kiyohide Matsui
  • Intermediates in a process for preparing dihalovinylcyclopropanecarboxylates
    Patent number: 4454343
    Abstract: Novel syntheses of dihalovinylcyclopropanecarboxylates, including potent insecticides, are described. The processes begin with the reaction between an alkenol and an orthoester to produce a .gamma.-unsaturated carboxylate, followed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: June 12, 1984
    Assignee: FMC Corporation
    Inventors: Kiyoshi Kondo, Kiyohide Matsui
  • Process for preparing dihalovinylcyclopropanecarboxylates
    Patent number: 4214097
    Abstract: Novel syntheses of dihalovinylcyclopropanecarboxylates, including potent insecticides, are described. The processes begin with the reaction between an alkenol and an orthoester to produce a .gamma.-unsaturated carboxylate, followed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.
    Type: Grant
    Filed: January 20, 1978
    Date of Patent: July 22, 1980
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyoshi Kondo, Kiyohide Matsui, Akira Negishi, Yuriko Takahatake
  • Process for converting 2,2-dichlorovinylcyclopropanes to dibromovinyl analogs
    Patent number: 4188492
    Abstract: Treatment of 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acids and esters with aluminum bromide, the reaction product of aluminum and a bromoalkane, or HBr and the product of the reaction of HBr with aluminum or an aluminum salt produces the 3-(2,2-dibromovinyl)-2,2-dimethylcyclopropane analogs.
    Type: Grant
    Filed: January 3, 1979
    Date of Patent: February 12, 1980
    Assignee: FMC Corporation
    Inventors: Kiyoshi Kondo, Kiyohide Matsui
  • Process for preparing 6,6,6-trihalo-3,3-dimethyl-4-hexenoates
    Patent number: 4092482
    Abstract: An improved process for preparing a 6,6,6-trihalo-3,3-dimethyl-4-hexenoate, intermediate in the production of pyrethroid insecticides, comprises dehydrohalogenating with an organic amine a 4,6,6,6-tetrahalo-3,3-dimethylhexanoate having a 4-halogen atom of higher atomic number than any of the 6-halogen atoms.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: May 30, 1978
    Assignee: Sagami Chemical Research Center
    Inventors: Kiyoshi Kondo, Kiyohide Matsui, Akira Negishi, Yuriko Takahatake