Patents by Inventor Katsuyoshi Sasagawa

Katsuyoshi Sasagawa 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).

  • Electroconductive resin composition
    Patent number: 4481131
    Abstract: An electroconductive polyolefin composition comprising (1) 100 parts by weight of a polyolefin resin, (2) 10 to 60 parts by weight of carbon black, (3) 0.1 to 6 parts by weight of sulfur and (4) at least 0.1 part by weight of one or two specified accelerators, and optionally containing 5 to 60 parts by weight of atactic polypropylene.
    Type: Grant
    Filed: February 11, 1982
    Date of Patent: November 6, 1984
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yoichi Kawai, Yoshihisa Gotoh, Masami Maki, Sachio Yokote, Katsumi Sekiguchi, Katsuyoshi Sasagawa, Masao Imai
  • Polypropylene composition containing a 1.3,2.4-di(alkylbenzylidene) sorbitol
    Patent number: 4314039
    Abstract: A composition having improved transparency and being substantially free from a bleeding phenomenon comprising 100 parts by weight of polypropylene and 0.005 to 8 parts by weight of a 1.3,2.4-di(alkylbenzylidene) sorbitol with each alkyl group having 2 to 18 carbon atoms.
    Type: Grant
    Filed: August 6, 1980
    Date of Patent: February 2, 1982
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yoichi Kawai, Katsuyoshi Sasagawa, Masami Maki, Hozumi Ueda, Masayoshi Miyamoto