Patents by Inventor Shin Tatematsu

Shin Tatematsu 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).

  • Patent number: 6919480
    Abstract: The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: July 19, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu
  • Patent number: 6894187
    Abstract: The present invention provides a method for obtaining a compound useful as a raw material for various fluororesins in high yield by a short process by using a starting material which is inexpensive and readily available.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: May 17, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Masahiro Ito, Daisuke Shirakawa, Masao Iwaya, Hidekazu Okamoto
  • Patent number: 6858752
    Abstract: A fluorinated polyvalent carbonyl compound is produced by an economically advantageous method from inexpensive materials without requiring a complicated synthetic process step. Namely, the present invention comprises reacting a polyvalent alcohol having at least two kinds of alcohol skeletons selected among a primary alcohol, a secondary alcohol and a tertiary alcohol, with an acid halide to obtain a polyvalent ester compound, fluorinating it in a liquid phase to obtain a perfluorinated polyvalent ester compound, and cleaving the ester bonds derived from primary and secondary alcohols in the perfluoropolyvalent ester compound to obtain a fluorinated polyvalent carbonyl compound.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: February 22, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Daisuke Shirakawa, Masahiro Ito, Shin Tatematsu
  • Publication number: 20050020855
    Abstract: The invention provides a process for producing a fluorine-containing compound from an inexpensive material. Namely, Compound I such as RACH2OH is reacted with Compound II such as XCORB to form Compound III such as RACH2OCORB, followed by fluorination in a liquid phase to form Compound IV such as RAFCF2OCORBF, which is converted to Compound V such as RAFCOF and/or Compound VI such as RBFCOF. RA is an alkyl group or the like, RB is a perhalogenoalkyl group or the like, RAF and RBF are fluorinated RA and RB, and X is halogen.
    Type: Application
    Filed: August 11, 2004
    Publication date: January 27, 2005
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Hidenobu Murofushi
  • Publication number: 20040267053
    Abstract: The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process.
    Type: Application
    Filed: June 17, 2004
    Publication date: December 30, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu, Hirokazu Takagi
  • Publication number: 20040256750
    Abstract: A process for producing inorganic spheres, which comprises injecting an aqueous liquid containing an inorganic compound into a laminar flow of an organic liquid which runs at a flow rate of from 0.001 to 2 m/s in a flow path through a porous membrane to form a W/O type emulsion and solidifying the aqueous liquid containing an inorganic compound in the W/O type emulsion.
    Type: Application
    Filed: June 15, 2004
    Publication date: December 23, 2004
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Kenji Yamada, Shin Tatematsu, Kazuhiko Yamada
  • Publication number: 20040258601
    Abstract: A process for producing inorganic spheres, which comprises injecting an aqueous liquid containing an inorganic compound through an inlet hole into an organic liquid which flows at a flow rate of from 0.001 to 2 m/s in a laminar flow state in a flow path to form a W/O type emulsion, and solidifying the aqueous liquid containing an inorganic compound in the W/O type emulsion.
    Type: Application
    Filed: July 15, 2003
    Publication date: December 23, 2004
    Applicant: Asahi Glass Company, Limited
    Inventors: Toshiya Matsubara, Masaharu Tanaka, Shin Tatematsu, Kazuhiko Yamada, Kenji Yamada, Kenichi Ebata, Hajime Katayama, Kentarou Tsunozaki
  • Patent number: 6833477
    Abstract: The process for producing a vic-dichloro acid fluoride compound in a short process and in good yield from the starting material which is inexpensive and readily available is provided. (RH1—EH1—)CRH2RH3CH2—OCORHB (I) is fluorinated in a liquid phase to form (CF2ClCFCl—EFF1—) CRF2RF3CF2—OCORFB (II), and then, an ester bond of the compound (II) is decomposed to form (CF2ClCFCl—EF1—)CRF2RF3COF(III) or the compound (III) and FCORFB (IV).
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: December 21, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu
  • Publication number: 20040254396
    Abstract: A fluorinated polyvalent carbonyl compound is produced by an economically advantageous method from inexpensive materials without requiring a complicated synthetic process step. Namely, the present invention comprises reacting a polyvalent alcohol having at least two kinds of alcohol skeletons selected among a primary alcohol, a secondary alcohol and a tertiary alcohol, with an acid halide to obtain a polyvalent ester compound, fluorinating it in a liquid phase to obtain a perfluorinated polyvalent ester compound, and cleaving the ester bonds derived from primary and secondary alcohols in the perfluoropolyvalent ester compound to obtain a fluorinated polyvalent carbonyl compound.
    Type: Application
    Filed: July 15, 2004
    Publication date: December 16, 2004
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Daisuke Shirakawa, Masahiro Ito, Shin Tatematsu
  • Publication number: 20040204618
    Abstract: The present invention provides a method for obtaining a compound useful as a raw material for various fluororesins in high yield by a short process by using a starting material which is inexpensive and readily available.
    Type: Application
    Filed: April 28, 2004
    Publication date: October 14, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Masahiro Ito, Daisuke Shirakawa, Masao Iwaya, Hidekazu Okamoto
  • Patent number: 6803488
    Abstract: The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: October 12, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu, Hirokazu Takagi
  • Patent number: 6756458
    Abstract: A novel polymer useful as an optical resin material excellent in heat resistance, a novel monomer for obtaining the polymer, etc., are provided. A fluorinated diene represented by CF2═CF(CF2)nC(CF3)ROCF═CF2 (wherein R is a fluorine atom or a trifluoromethyl group, and n is an integer of from 1 to 3), and a polymer thereof.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: June 29, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Kimiaki Kashiwagi, Gen Ogawa, Masakuni Sato, Kazuya Oharu, Isamu Kaneko, Norihide Sugiyama, Shin Tatematsu
  • Publication number: 20040110968
    Abstract: The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 10, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu
  • Patent number: 6747174
    Abstract: The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: June 8, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu
  • Publication number: 20030216595
    Abstract: The present invention provides a method for producing industrially useful fluorine-containing compounds such as a fluorinated ester compound and an acid fluoride compound.
    Type: Application
    Filed: March 27, 2003
    Publication date: November 20, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Koichi Yanase, Yasuhiro Suzuki, Daisuke Shirakawa
  • Publication number: 20030204099
    Abstract: The invention provides a process for producing a fluorine-containing compound from an inexpensive material.
    Type: Application
    Filed: April 24, 2003
    Publication date: October 30, 2003
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Hidenobu Murofushi
  • Publication number: 20030171616
    Abstract: A process for efficiently producing an acyl fluoride and a carboxylic acid salt while inhibiting side reactions.
    Type: Application
    Filed: March 27, 2003
    Publication date: September 11, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kunio Watanabe, Takashi Okazoe, Masahiro Ito, Shin Tatematsu, Hiroki Kamiya, Eisuke Murotani
  • Publication number: 20030166969
    Abstract: A fluorinated polyvalent carbonyl compound is produced by an economically advantageous method from inexpensive materials without requiring a complicated synthetic process step. Namely, the present invention comprises reacting a polyvalent alcohol having at least two kinds of alcohol skeletons selected among a primary alcohol, a secondary alcohol and a tertiary alcohol, with an acid halide to obtain a polyvalent ester compound, fluorinating it in a liquid phase to obtain a perfluorinated polyvalent ester compound, and cleaving the ester bonds derived from primary and secondary alcohols in the perfluoropolyvalent ester compound to obtain a fluorinated polyvalent carbonyl compound.
    Type: Application
    Filed: March 27, 2003
    Publication date: September 4, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Daisuke Shirakawa, Masahiro Ito, Shin Tatematsu
  • Publication number: 20030146103
    Abstract: The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether.
    Type: Application
    Filed: January 28, 2003
    Publication date: August 7, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu
  • Publication number: 20030149309
    Abstract: The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process.
    Type: Application
    Filed: February 26, 2003
    Publication date: August 7, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu, Hirokazu Takagi