Patents by Inventor Hotuma Okasaka

Hotuma Okasaka 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).

  • Flame retardant polyester composition
    Patent number: 4010219
    Abstract: A flame retardant polybutyleneterephthalate composition having excellent flame resistance with reduced tendency to drip during combustion, is provided by adding a halogenated diphenylether and a diepoxide compound to a polyester which contains at least 80 mole percent of terephthalic acid based on the total moles of dicarboxylic acid, and at least 80 mole percent 1, 4-butanediol based on the total moles of diol. Decabromodiphenyl is an optional additive.
    Type: Grant
    Filed: January 16, 1976
    Date of Patent: March 1, 1977
    Assignee: Toray Industries, Inc.
    Inventors: Toshikazu Aoyama, Hotuma Okasaka, Hiroshi Kodama
  • Flame retarding polyester composition
    Patent number: 3971752
    Abstract: A glass fiber reinforced flame retarding polyester composition containing decabromodiphenyl ether and/or decabromodiphenyl together with antimony trioxide wherein the ratio by weight of bromine atom to antimony atom is within the range of 0.15 to 0.29.The composition has excellent durability for thermal degradation and improved coloring properties in shaped form.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: July 27, 1976
    Assignee: Toray Industries, Inc.
    Inventors: Toshikazu Aoyama, Yukinori Kimata, Hotuma Okasaka, Hiroshi Kodama, Naoya Yoda
  • Thermoplastic resin composition having reduced flammability
    Patent number: 3959219
    Abstract: This invention relates to a thermoplastic resin composition having reduced flammability which comprises a flammable thermoplastic resin, a flame-retarding agent composed of combined halogenated aromatic compound and an organic compound having a cyanurate or isocyanurate ring structure.The composition has well-balanced physical properties and has an especially good external appearance and elongation together with flame resistance.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: May 25, 1976
    Assignee: Toray Industries, Inc.
    Inventors: Toshikazu Aoyama, Yukinori Kimata, Hotuma Okasaka, Hiroshi Kodama, Naoya Yoda