Patents by Inventor Etsuko Akagi

Etsuko Akagi 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).

  • Methods for producing a polyol and a polymer dispersed polyol
    Patent number: 6815467
    Abstract: A method for producing a polyoxyalkylene polyol which comprises subjecting propylene oxide and ethylene oxide to ring-opening addition polymerization with an initiator in the presence of a catalyst, wherein the polyoxyalkylene polyol is a polyoxyalkylene polyol obtained by subjecting propylene oxide to ring-opening addition polymerization with an initiator in the presence of a double metal cyanide complex catalyst to form an oxypropylene block chain, subjecting ethylene oxide and propylene oxide to ring-opening addition polymerization randomly to form an oxyalkylene random chain, changing the catalyst and subjecting ethylene oxide to ring-opening addition polymerization in the presence of an alkali metal catalyst to form an oxyethylene block chain, and the polyoxyalkylene polyol is a polyoxyalkylene polyol having a hydroxyl value of from 5 to 56 mgKOH/g, a proportion of an initiator residue of at most 25 mass %, a proportion of the oxypropylene block chain of from 5 to 50 mass %, a total oxyethylene group c
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: November 9, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshinori Toyota, Akio Horie, Hiroshi Wada, Kayoko Sugiyama, Etsuko Akagi
  • Flexible polyurethane foam and method for its production
    Publication number: 20040152797
    Abstract: A method for producing a flexible polyurethane foam in an open state, which comprises reacting a polyol with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, wherein as the polyol, a polyol having a hydroxyl value of at most 15 mgKOH/g is used.
    Type: Application
    Filed: January 22, 2004
    Publication date: August 5, 2004
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroshi Wada, Katsuji Kuribayashi, Takayuki Sasaki, Yuuji Kimura, Hisakazu Harada, Etsuko Akagi
  • Flexible polyurethane foam, its production method and material system for its production
    Patent number: 6759448
    Abstract: A flexible polyurethane foam, wherein in a load (N)-deflection (mm) loop obtained by a load test of the flexible polyurethane foam, the X value as calculated from the formula (1) is at most 4.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: July 6, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshinori Toyota, Hiroshi Wada, Etsuko Akagi
  • Flexible polyurethane foam and method for its production
    Patent number: 6756415
    Abstract: A flexible polyurethane foam having a core impact resilience of at most 40%, of which the half-width of the resonance transmission peak in the resonance curve is at most 1 Hz.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: June 29, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Yuuji Kimura, Takayuki Sasaki, Etsuko Akagi
  • Flexible polyurethane foam and method for its production
    Patent number: 6734219
    Abstract: A method for producing a flexible polyurethane foam in an open state, which comprises reacting a polyol with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, wherein as the polyol, a polyol having a hydroxyl value of at most 15 mgKOH/g is used.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: May 11, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Hiroshi Wada, Katsuji Kuribayashi, Takayuki Sasaki, Yuuji Kimura, Hisakazu Harada, Etsuko Akagi
  • Flexible polyurethane foam and method for its production
    Publication number: 20030130367
    Abstract: A flexible polyurethane foam having a core impact resilience of at most 40%, of which the half-width of the resonance transmission peak in the resonance curve is at most 1 Hz.
    Type: Application
    Filed: November 25, 2002
    Publication date: July 10, 2003
    Applicant: Asahi Glass Company, Limited
    Inventors: Yuuji Kimura, Takayuki Sasaki, Etsuko Akagi
  • Flexible polyurethane foam, its production method and material system for its production
    Publication number: 20030114550
    Abstract: A flexible polyurethane foam, wherein in a load (N)-deflection (mm) loop obtained by a load test of the flexible polyurethane foam, the X value as calculated from the formula (1) is at most 4.
    Type: Application
    Filed: August 5, 2002
    Publication date: June 19, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Yoshinori Toyota, Hiroshi Wada, Etsuko Akagi
  • Flexible polyurethane foam and method for its production
    Publication number: 20030109594
    Abstract: A method for producing a flexible polyurethane foam in an open state, which comprises reacting a polyol with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, wherein as the polyol, a polyol having a hydroxyl value of at most 15 mgKOH/g is used.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 12, 2003
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroshi Wada, Katsuji Kuribayashi, Takayuki Sasaki, Yuuji Kimura, Hisakazu Harada, Etsuko Akagi
  • Methods for producing a polyol and a polymer dispersed polyol
    Publication number: 20030100801
    Abstract: A method for producing a polyoxyalkylene polyol which comprises subjecting propylene oxide and ethylene oxide to ring-opening addition polymerization with an initiator in the presence of a catalyst,
    Type: Application
    Filed: July 18, 2002
    Publication date: May 29, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Yoshinori Toyota, Akio Horie, Hiroshi Wada, Kayoko Sugiyama, Etsuko Akagi