Patents by Inventor Keizi Iio

Keizi Iio 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 styrene-base resin composition
    Patent number: 4735983
    Abstract: A flame-retardant styrene-base resin composition is composed of 100 parts by weight of a styrene-base resin, 2.0-20.0 parts by weight of a halogenous flame retardant and 0.1-5.0 parts by weight of an antimony compound. The weight ratio of halogen atoms/antimony atoms in the resin composition is 5 or greater. The resin composition of this invention has well-balanced specific gravity, impact resistance and heat resistance and flame retardancy.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: April 5, 1988
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masato Takaku, Ichiro Otsuka, Keizi Iio, Nobuyuki Tashiro, Daizo Natsugari, Hideo Ichikawa