Patents by Inventor Tatsuo Ouchi

Tatsuo Ouchi 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).

  • Triblock copolymer, method for producing the same, and biocompatible material
    Patent number: 7714077
    Abstract: The present invention relates to a triblock copolymer, that is multipurpose yet has sufficient properties particularly for medical applications, and is useful as a material having excellent flexibility and water absorbability, as well as to a method for producing the same, and a biocompatible material. The copolymer of the present invention is composed of segments A1 and A2 each composed of a polymer having a depsipeptide unit, such as a segment selected from a homopolymer of depsipeptide or a copolymer of lactide and depsipeptide, and segment B composed of polyalkylene glycol, such as PEG, and is a A1-B-A2 triblock copolymer having a number average molecular weight of 8000 to 500000. The biocompatible material of the present invention contains the triblock copolymer as a main component, and may be used as a tissue anti-adhesion barrier.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: May 11, 2010
    Assignee: NOF Corporation
    Inventors: Shinji Tanaka, Kenji Kato, Yuichi Ohya, Tatsuo Ouchi
  • Tertiary block copolymer, process for producing the same, and biocompatible material
    Publication number: 20060223975
    Abstract: The present invention relates to a triblock copolymer, that is multipurpose yet has sufficient properties particularly for medical applications, and is useful as a material having excellent flexibility and water absorbability, as well as to a method for producing the same, and a biocompatible material. The copolymer of the present invention is composed of segments A1 and A2 each composed of a polymer having a depsipeptide unit, such as a segment selected from a homopolymer of depsipeptide or a copolymer of lactide and depsipeptide, and segment B composed of polyalkylene glycol, such as PEG, and is a A1-B-A2 triblock copolymer having a number average molecular weight of 8000 to 500000. The biocompatible material of the present invention contains the triblock copolymer as a main component, and may be used as a tissue anti-adhesion barrier.
    Type: Application
    Filed: July 7, 2004
    Publication date: October 5, 2006
    Inventors: Shinji Tanaka, Kenji Kato, Yuichi Ohya, Tatsuo Ouchi