Patents by Inventor Mitushige Baba

Mitushige Baba 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).

  • Thermoplastic elastomer and a process for its production
    Patent number: 5183856
    Abstract: A thermoplastic elastomer comprising 55-90 parts by weight of a crosslinked acrylic rubber having a glass transition temperature of 0.degree. C. or lower and 45-10 parts by weight a copolymer of a methacrylate ester with a maleimide, which has a glass transition temperature of 110.degree. C. or higher. This thermoplastic elastomer may be produced by a first step of polymerizing an acrylic ester in the presence of a polyfunctional monomer with or without a chain transfer agent and a second step of adding a methacrylate ester and a maleimide to the resulting acrylic rubber to carry out copolymerization.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: February 2, 1993
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Sadao Kitagawa, Mitushige Baba