Patents by Inventor Yuzo Sonoyama

Yuzo Sonoyama 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).

  • Impact-resistant, flame-retardant resin composition
    Patent number: 3981843
    Abstract: An impact-resistant, flame-retardant resin composition is disclosed comprisingI. 100 parts by weight of a resin mixture of:A. 15 to 85 weight percent of ABS resin, andB. 15 to 85 weight percent of a high molecular weight aromatic polycarbonate copolymer derived from 5 to 50 weight percent of a bisphenol the nucleus of which is substituted with a halogen, and 50 to 95 weight percent of an unsubstituted bisphenol, andIi. 0.001 to 5 parts by weight of an inorganic or organic antimony compound.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: September 21, 1976
    Assignees: Daicel, Ltd., Mitsubishi Gas Chemical Company, Inc.
    Inventors: Hiroyuki Yoshizaki, Hiromitsu Takanohashi, Yoshitaka Masuda, Yukio Hozumi, Akira Ohi, Yuzo Sonoyama
  • Self-extinguishing polystyrene resin composition
    Patent number: 3966677
    Abstract: A polystyrene resin composition is prepared by adding to polystyrene resin, a mixture of (a) tricresyl phosphate and/or triphenyl phosphate and (b) a carbonate oligomer of 2,2-(4-4'-dihydroxy-3,3,',5,5'-tetrabromodiphenyl) propane which is terminated at its ends with a monofunctional phenol. These compounds are mixed with the oligomer in a selected mole ratio. The resin composition is self-extinguishing and possesses excellent thermal resistance, without diminution of the other original desireable properties of the resin.
    Type: Grant
    Filed: September 6, 1974
    Date of Patent: June 29, 1976
    Assignee: Daicel Ltd.
    Inventors: Yuzo Sonoyama, Akira Ohi, Yukio Hozumi