Patents Assigned to Ltd. Unitika
  • Rubber compositions for tires
    Patent number: 4942192
    Abstract: A rubber composition for use in tire, particularly bead filler comprises 2.about.30 parts by weight of a particular modified novolak resin having a self-curability based on 100 parts by weight of rubber ingredient.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: July 17, 1990
    Assignees: Bridgestone Corporation, Ltd. Unitika
    Inventors: Takuo Yasuda, Hitoshi Kondo, Yoshiaki Echigo, Tsuneyuki Ohsawa, Yoshiaki Maekawa