Patents by Inventor Soko Yanagita

Soko Yanagita 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-containing sytrenic resin and process for producing the same
    Publication number: 20020052447
    Abstract: The rubber-containing styrenic resin of the present invention comprises a styrenic resin matrix and a rubber component dispersed in particles. In the resin, the graft ratio of a styrenic monomer relative to the rubber component is not less than 1, the particle size of the dispersed rubber component is 0.
    Type: Application
    Filed: October 24, 2001
    Publication date: May 2, 2002
    Applicant: Daicel Chemical Industries, Ltd.
    Inventors: Takeshi Asada, Junichi Sekiguchi, Tadashi Teranishi, Koichi Umemoto, Soko Yanagita
  • Rubber-containing styrenic resin and process for producing the same
    Patent number: 6333381
    Abstract: The rubber-containing styrenic resin of the present invention comprises a styrenic resin matrix and a rubber component dispersed in particles. In the resin, the graft ratio of a styrenic monomer relative to the rubber component is not less than 1, the particle size of the dispersed rubber component is 0.1 to 3 &mgr;m, and the following equation (1) is satisfied: Mn=aT+b  (1) wherein Mn is the number average molecular weight of the matrix resin; T is the conversion of the styrenic monomer; a is a constant greater than 0; and b is a constant of 0 or greater. The rubber component may be a butadiene-series rubber. The particle-size distribution of the dispersed rubber component may have, for example, two peaks.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: December 25, 2001
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Takeshi Asada, Junichi Sekiguchi, Tadashi Teranishi, Koichi Umemoto, Soko Yanagita