Patents by Inventor Ryuichi Kohzu

Ryuichi Kohzu 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).

  • P-HYDROXYBENZOIC ESTERS, PLASTICIZER CONTAINING THE SAME, POLYAMIDE RESIN COMPOSITION, AND MOLDED ARTICLES
    Publication number: 20020032303
    Abstract: The present invention provides a p-hydroxybenzoic ester represented by the formula (1) 1
    Type: Application
    Filed: August 27, 1999
    Publication date: March 14, 2002
    Inventors: HIDEO FUKUDA, YOSHIFUMI FUJITANI, RYUICHI KOHZU
  • p-hydroxybenzoic esters, plasticizer containing the same, polyamide resin composition and molded articles
    Patent number: 6348563
    Abstract: The present invention provides a p-hydroxybenzoic ester represented by the formula (1) wherein R1 represents a C6-C10 straight-chain or branched-chain alkyl group, A1 represents a C2-C4 alkylene group and n in an integer of 1 to 8, a plasticizer for at least one polyamide resin selected from nylon 11 and nylon 12 which comprises the ester, a polyamide resin composition comprising the ester and at least one polyamide resin selected from nylon 11 and nylon 12, and a polyamide resin molded article comprising the ester and having excellent high-temperature volatilization resistance and low-temperature impact resistance.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: February 19, 2002
    Assignee: New Japan Chemical Co., Ltd.
    Inventors: Hideo Fukuda, Yoshifumi Fujitani, Ryuichi Kohzu
  • Polyester resin composition
    Patent number: 5563222
    Abstract: The present invention is directed to a polyester resin composition comprising a polyester resin and a specific polyalkylene glycol derivative. The polyester resin composition of the invention is excellent in plasticity, compatibility, retention and resistance to volatilization.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: October 8, 1996
    Assignees: New Japan Chemical Co., Ltd., Toyo Boseki Kabushiki Kaisha
    Inventors: Hideo Fukuda, Ryuichi Kohzu