Patents by Inventor Takashi Okazoe

Takashi Okazoe 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).

  • Method for producing a fluorine-containing compound
    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
  • Process for producing fluorinated polyvalent carbonyl compound
    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
  • Process for producing a fluorine-containing compound by liquid phase fluorination
    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
  • Process for producing fluorinated ketone
    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
  • Process for producing a vic-dichloro acid fluoride
    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
  • Process for producing fluorinated polyvalent carbonyl compound
    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
  • Processes for producing a fluorosulfonyl group-containing compound and a compound led from the fluorosulfonyl group-containing compound
    Publication number: 20040230018
    Abstract: A fluorosulfonyl group-containing compound having a high polymerization reactivity, a process for its production, a sulfonyl group-containing polymerizable monomer led from the sulfonyl group-containing compound, and a polymer obtainable by polymerizing the sulfonyl group-containing polymerizable monomer, are provided.
    Type: Application
    Filed: April 23, 2004
    Publication date: November 18, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Atsushi Watakabe, Masahiro Ito, Kunio Watanabe, Takeshi Eriguchi, Kimiaki Kashiwagi, Shu-zhong Wang
  • Fluorinated diene compound and fluoropolymer, and methods for their production
    Publication number: 20040204615
    Abstract: A novel fluoropolymer which can be an optical resin material having a low refractive index and excellent heat resistance, and a novel fluorinated diene compound having two unsaturated bonds, capable of presenting such a fluoropolymer, are presented. Further, by virtue of the low refractive index and excellent heat resistance, the polymer presents a high performance optical transmitter and a plastic optical fiber.
    Type: Application
    Filed: April 29, 2004
    Publication date: October 14, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kimiaki Kashiwagi, Gen Ogawa, Takashi Okazoe, Kunio Watanabe, Eisuke Murotani, Kazuya Oharu
  • Method for producing a fluorine-containing compound
    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
  • Process for producing fluorinated ketone
    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
  • Process for producing a fluorine atom-containing sulfonyl fluoride compound
    Publication number: 20040181091
    Abstract: The present invention provides a process whereby fluorine atom-containing sulfonyl fluoride compound(s) useful as e.g. materials for ion-exchange membranes, can be produced efficiently and at low cost without structural limitations while solving the difficulties in production.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 16, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Masahiro Ito, Kunio Watanabe, Takashi Okazoe, Isamu Kaneko, Daisuke Shirakawa
  • Process for producing a fluorine atom-containing sulfonyl fluoride compound
    Patent number: 6790982
    Abstract: The present invention provides a process whereby fluorine atom-containing sulfonyl fluoride compound(s) useful as e.g. materials for ion-exchange membranes, can be produced efficiently and at low cost without structural limitations while solving the difficulties in production. The present invention is also directed to a compound of the following formula (I) or a compound of the following formula (II): FSO2CH2CH2OCH2OCOCF(CF3)OCF2CF2CF3  (I) FSO2CF2CF2OCF2CF2OCOCF(CF3)OCF2CF2CF3  (II).
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: September 14, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Masahiro Ito, Kunio Watanabe, Takashi Okazoe, Isamu Kaneko, Daisuke Shirakawa
  • Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers
    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
  • Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers
    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
  • Method for producing a fluorinated ester compound
    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
  • Process for producing a fluorine atom-containing sulfonyl fluoride compound
    Publication number: 20030212297
    Abstract: The present invention provides a process whereby fluorine atom-containing sulfonyl fluoride compound(s) useful as e.g. materials for ion-exchange membranes, can be produced efficiently and at low cost without structural limitations while solving the difficulties in production.
    Type: Application
    Filed: May 21, 2003
    Publication date: November 13, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Masahiro Ito, Kunio Watanabe, Takashi Okazoe, Isamu Kaneko, Daisuke Shirakawa
  • Method for producing a fluorinated ester compound by means of gas chromatography
    Publication number: 20030203501
    Abstract: The present invention provides a production method to effectively obtain a product in a yield equal to or higher than an objective level, by accurately analyzing the amount of a fluorinated ester compound at the time of its production, or by accurately analyzing the consumption amount or the produced amount of the product or the fluorinated ester compound at the time of chemical conversion of the fluorinated ester compound.
    Type: Application
    Filed: May 16, 2003
    Publication date: October 30, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kengo Kawahara, Tsuguhide Isemura, Takashi Okazoe
  • Process for producing a fluorine-containing compound by liquid phase fluorination
    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
  • Method of producing amorphous paroxetine hydrochloride
    Publication number: 20030181725
    Abstract: A method of producing amorphous paroxetine hydrochloride, which comprises converting paroxetine or its lower alkanoic acid salt into paroxetine hydrochloride and then spray drying a solution of the hydrochloride.
    Type: Application
    Filed: December 19, 2002
    Publication date: September 25, 2003
    Applicant: ASAHI GLASS COMPANY LTD.
    Inventors: Shu-zhong Wang, Takashi Okazoe, Yasushi Matsumura
  • Process for producing acyl fluoride and carboxylic acid salt
    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