Patents by Inventor Kouzou Ichikawa

Kouzou Ichikawa 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).

  • Rubber modified styrenic resin composition having high gloss and impact strength
    Patent number: 5473014
    Abstract: A rubber modified styrenic resin composition which can be obtained by dispersing rubber-like polymer particles in a homopolymer or a copolymer of a styrenic monomer. The rubber modified styrenic resin composition has:(a) a volume-average particle size of the rubber-like polymer particles is in the range of from 0.2 to 0.8 .mu.m,(b) a particle size distribution curve on the basis of the volume of the rubber-like polymer particles has one peak,(c) a ratio of a 5% value to a 95% value of the cumulative distribution of the particle size on the basis of the volume of the rubber-like polymer particles is in the range of from 3 to 45.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: December 5, 1995
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Toshihiko Ando, Mune Iwamoto, Masahiro Kaneko, Kouzou Ichikawa, Akihiko Nakajima, Masato Takaku