Patents by Inventor Koichi Yanase

Koichi Yanase 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).

  • 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: 20030139570
    Abstract: The present invention produces an unsaturated compound (Formula 2) useful as a fluororesin starting material and the like by using a compound of the Formula 1 as a starting material.
    Type: Application
    Filed: December 2, 2002
    Publication date: July 24, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Masakuni Sato, Hidenobu Murofushi, Koichi Yanase, Yasuhiro Suzuki
  • Publication number: 20030105238
    Abstract: A polypropylene resin composition comprising 100 parts by weight of a polypropylene resin (A) having a die swell ratio of less than about 1.70 and about 0.01 to about 45 parts by weight of a polypropylene resin (B) having a die swell ratio of about 1.80 or more. A T die film is also provided, composing polypropylene wherein the film has a molecular weight distribution of about 4.2 or less and a die swell ratio of 1.28 or more. A method of producing a T die film is also provided, comprising the steps of melt-kneading polypropylene by an extruder, extruding the melted product through a die lip, and cool-solidifying the extruded material by a cooling roll to form a film. The film resulting by this method has a molecular weight distribution about of 4.2 or less and a die swell ratio of about 1.28 or more. Further, the present invention provides a laminated molded body comprising a heat molded body composed of a polypropylene resin composition containing 100 parts by weight of polypropylene resin (A), about 0.
    Type: Application
    Filed: October 29, 2002
    Publication date: June 5, 2003
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazunori Kanamori, Shigeki Kishiro, Kenichi Higashi, Koichi Yanase
  • Publication number: 20030098282
    Abstract: A method for adsorbing and recovering a fluorine-containing emulsifier at a high recovery from coagulation waste water of a fluoropolymer, is presented. An inorganic acid is added to coagulation waste water of a fluoropolymer containing a fluorine-containing emulsifier, to adjust the pH of the waste water to a level of at least 1 and less than 6, then a metal chloride having a solubility of at least 5 mass % in water at 25° C., or a hydrate of the metal chloride, is added to the waste water, to coagulate and remove a solid content and/or a substance convertible to a solid content, contained in the waste water, and then the waste water is contacted to a weakly basic anion exchange resin.
    Type: Application
    Filed: November 13, 2002
    Publication date: May 29, 2003
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hiroshi Funaki, Eisuke Murotani, Koichi Yanase, Hiroki Kamiya
  • Publication number: 20020032283
    Abstract: A polypropylene resin composition comprising 100 parts by weight of a polypropylene resin (A) having a die swell ratio of less than about 1.70 and about 0.01 to about 45 parts by weight of a polypropylene resin (B) having a die swell ratio of about 1.80 or more. A T die film is also provided, composing polypropylene wherein the film has a molecular weight distribution of about 4.2 or less and a die swell ratio of 1.28 or more. A method of producing a T die film is also provided, comprising the steps of melt-kneading polypropylene by an extruder, extruding the melted product through a die lip, and cool-solidifying the extruded material by a cooling roll to form a film. The film resulting by this method has a molecular weight distribution about of 4.2 or less and a die swell ratio of about 1.28 or more. Further, the present invention provides a laminated molded body comprising a heat molded body composed of a polypropylene resin composition containing 100 parts by weight of polypropylene resin (A), about 0.
    Type: Application
    Filed: June 28, 2001
    Publication date: March 14, 2002
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazunori Kanamori, Shigeki Kishiro, Kenichi Higashi, Koichi Yanase
  • Patent number: 6297412
    Abstract: A process for purifying difluoromethane, which comprises subjecting a mixture comprising difluoromethane and hydrogen fluoride to extraction treatment with at least one extractant selected from the following (a) and (b) to separate it by liquid separation into an extractant layer comprising the difluoromethane and the extractant as the main components, and a hydrogen fluoride layer comprising the hydrogen fluoride as the main component, and separating the difluoromethane from the extractant layer: (a) Dichloromethane (b) Chlorofluoromethane.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: October 2, 2001
    Assignee: Asahi Glass Company, Limited
    Inventors: Takaaki Yokoyama, Koichi Yanase, Yasuhiro Suzuki
  • Publication number: 20010021793
    Abstract: A process for purifying difluoromethane, which comprises subjecting a mixture comprising difluoromethane and hydrogen fluoride to extraction treatment with at least one extractant selected from the following (a) and (b) to separate it by liquid separation into an extractant layer comprising the difluoromethane and the extractant as the main components, and a hydrogen fluoride layer comprising the hydrogen fluoride as the main component, and separating the difluoromethane from the extractant layer:
    Type: Application
    Filed: February 21, 2001
    Publication date: September 13, 2001
    Applicant: Asahi Glass Company, Limited
    Inventors: Takaaki Yokoyama, Koichi Yanase, Yasuhiro Suzuki
  • Patent number: 6284355
    Abstract: There are provided: a film(F) obtained by heat-aging a film containing a specific propylene resin; a laminated film(LF-1) having (i)a layer containing a specific propylene resin, and (ii)a layer containing a specific propylene block copolymer; a laminated film(LF-2) obtained by heat-aging the laminated film(LF-1); a laminated structure(LS-1) having (a)a substrate containing an olefinic resin, and (b)the film(F); a laminated structure(LS-2) having (a)a substrate containing an olefinic resin, and (b)the laminated film(LF-1); a laminated structure(LS-3) obtained by heat-aging said laminated structure(LS-2); a laminated structure(LS-4) having (a)a substrate containing an olefinic resin, and (b)a laminated film(LF-2); and a laminated structure(LS-5) having (a)a substrate containing an olefinic resin, and (b)a film containing a specific propylene resin.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: September 4, 2001
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Makoto Nagata, Koichi Yanase
  • Patent number: 5434321
    Abstract: A method for producing a dichloropentafluoropropane, which comprises reacting dichlorofluoromethane (R21) with tetrafluoroethylene (4F) in the presence of a Lewis acid catalyst for addition reaction to obtain dichloropentafluoropropane, wherein a halide containing at least one element selected from the group consisting of Sb, Nb, Ta, B, Ga, In, Zr, Hf and Ti, or AlBr.sub.3, or AlI.sub.3, is used as the Lewis acid.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: July 18, 1995
    Assignee: Asahi Glass Company Ltd.
    Inventors: Keiichi Ohnishi, Hidekazu Okamoto, Toshihiro Tanuma, Koichi Yanase, Toru Kawasaki, Ryutaro Takei
  • Patent number: 5227547
    Abstract: A method for producing a dichloropentafluoropropane, which comprises reacting dichlorofluoromethane (R21) with tetrafluoroethylene (4F) in the presence of a Lewis acid catalyst for addition reaction to obtain dichloropentafluoropropane, wherein a halide containing at least one element selected from the group consisting of Sb, Nb, Ta, B, Ga, In, Zr, Hf and Ti, or AlBr.sub.3, or AlI.sub.3, is used as the Lewis acid.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: July 13, 1993
    Assignee: Asahi Glass Company Ltd.
    Inventors: Keiichi Ohnishi, Hidekazu Okamoto, Toshihiro Tanuma, Koichi Yanase, Toru Kawasaki, Ryutaro Takei
  • Patent number: 5220084
    Abstract: A method for producing a dichloropentafluoropropane, which comprises reacting dichlorofluoromethane (R21) with tetrafluoroethylene (4F) in the presence of a Lewis acid catalyst for addition reaction to obtain dichloropentafluoropropane, wherein a halide containing at least one element selected from the group consisting of Sb, Nb, Ta, B, Ga, In, Zr, Hf and Ti, or AlBr.sub.3, or AlI.sub.3, is used as the Lewis acid.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: June 15, 1993
    Assignee: Asahi Glass Company Ltd.
    Inventors: Keiichi Ohnishi, Hidekazu Okamoto, Toshihiro Tanuma, Koichi Yanase, Toru Kawasaki, Ryutaro Takei