Patents by Inventor Ken-ichi Yanagisawa

Ken-ichi Yanagisawa 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).

  • Stabilizer against hydrolysis for an ester-group-containing resin and a thermoplastic resin composition
    Patent number: 7273902
    Abstract: A stabilizer against hydrolysis, which can solve conventional problems of a carbodiimide compound compounded in an ester-group-containing resin or a biodegradable plastic as a stabilizer against hydrolysis, such as poor heat resistance and a coloring problem due to yellowing, and can provide enhanced resistance against hydrolysis, and a thermoplastic resin composition of an ester-group-containing resin or a biodegradable plastic containing the same.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: September 25, 2007
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Ikuo Takahashi, Hirotaka Iida, Ken-ichi Yanagisawa
  • Stabilizer against hydrolysis for an ester-group-containing resin and a thermoplastic resin composition
    Publication number: 20050054755
    Abstract: A stabilizer against hydrolysis, which can solve conventional problems of a carbodiimide compound compounded in an ester-group-containing resin or a biodegradable plastic as a stabilizer against hydrolysis, such as poor heat resistance and a coloring problem due to yellowing, and can provide enhanced resistance against hydrolysis, and a thermoplastic resin composition of an ester-group-containing resin or a biodegradable plastic containing the same.
    Type: Application
    Filed: August 31, 2004
    Publication date: March 10, 2005
    Inventors: Ikuo Takahashi, Hirotaka Iida, Ken-ichi Yanagisawa