Patents by Inventor Takeshi Hatakeyama

Takeshi Hatakeyama 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).

  • Conductive thermoplastic resin composition
    Patent number: 5098610
    Abstract: There is disclosed a conductive thermoplastic resin composition which comprises:(a) 30 to 86% by weight of a thermoplastic aromatic polycarbonate,(b) 2 to 15% by weight of a high density polyethylene having a density of 0.945 to 0.970 g/cm.sup.3 and a melt flow rate of 0.1 to 30 g/10 min,(c) 5 to 20% by weight of a glass fiber having an average diameter of 3 to 15 .mu.m and an average length of 0.05 to 10 mm,(d) 5 to 20% by weight of a carbon fiber having an average diameter of 3 to 20 .mu.m and an average length of 0.03 to 15 mm, and(e) 2 to 15% by weight of a conductive carbon black.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: March 24, 1992
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Michiya Okamura, Hiroshi Yui, Norio Matsuo, Shuji Hamano, Takeshi Hatakeyama