Patents by Inventor Takao Usami

Takao Usami 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).

  • Patent number: 6825280
    Abstract: Disclosed are a propylene polymer composition possessing excellent balance among rigidity and low warpage, resistance to deterioration caused by thermal oxidation during processing, weathering resistance, antistatic properties, and low bleeding properties, and a propylene resin composition which can easily produce molded products having excellent balance between rigidity and impact resistance (particularly low-temperature impact resistance) or heat resistance. The propylene polymer composition and the propylene resin composition comprise a propylene block copolymer consisting essentially of the following blocks (a) and (b) and having a melt flow rate of 0.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: November 30, 2004
    Assignee: Japan Polychem Corporation
    Inventors: Yu Hayakawa, Tsuyoshi Ogasawara, Yuuji Fujita, Masao Sakaizawa, Kimiho Kosegaki, Toshihiko Sugano, Takao Tayano, Toru Suzuki, Yasuo Maruyama, Osamu Shibata, Takao Usami
  • Patent number: 6001455
    Abstract: There is provided a sheet-shaped product of a thermoplastic elastomer provided with an embossed pattern on the surface thereof, comprising as a base material a component (II) comprising a thermoplastic elastomer, said elastomer being obtained by subjecting a composition (I) comprising the following components (A) and (B) to dynamic heat treatment carried out in the presence of an organic peroxide: component (A): from 10 to 75% by weight of an olefin resin containing 50 to 100% by weight of a crystalline propylene polymer resin, and component (B): from 90 to 25% by weight of an olefin copolymer rubber containing 10 to 100% by weight of an olefin-propylene copolymer rubber whose propylene content is from 65 to 90% by weight.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: December 14, 1999
    Assignees: Mitsubishi Chemical Corporation, Toyota Jidosha Kabushiki Kaisha, Kyowa Leather Cloth Co.,Ltd
    Inventors: Takeyoshi Nishio, Takao Nomura, Yukio Okishio, Ichiro Nishi, Tatsuo Yamamoto, Junji Mayumi, Takao Usami, Takao Yazaki