Patents by Inventor Syuzi Takahashi

Syuzi Takahashi 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).

  • Heat stable thermoplastic resin composition
    Patent number: 5155151
    Abstract: A thermoplastic resin composition having improved heat stability which comprises a thermoplastic resin which contains at least 5% by weight of an .alpha.-alkyl-substituted aromatic copolymer comprising .alpha.-alkyl-substituted aromatic vinyl compound and at least one other comonomer copolymerizable therewith, wherein the composition contains a metal-deactivating agent which has a molecular weight of not more than 2,000 and at least one group of the formula: ##STR1## or an organometallic colorant containing free metal in an amount of not more than 2,000 ppm, from which a molded article having no or less silver streaks can be produced.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: October 13, 1992
    Assignee: Sumitomo Naugatuck Co., Ltd.
    Inventors: Kenji Hashimoto, Syuzi Takahashi, Hiroyuki Minematsu