Patents by Inventor Tomohide Yokoo

Tomohide Yokoo 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).

  • Phenolic resin compositions
    Patent number: 4435543
    Abstract: Phenolic resin compositions comprising a polymeric substance having a phenolic OH group such as phenol resins, and a rubber having an epoxy group and an epoxy equivalent of 500 to 30,000 such as butadiene copolymers, acrylic copolymers, chloroprene copolymers and urethane copolymers are provided. These resin compositions exhibit improved properties having overcome the drawback of brittle properties intrinsic of conventional phenolic resins, and also exhibit cold resistance; hence they are used as molding materials, laminating materials, casting materials, binders, etc. Further, molding resin compositions having improved solvent-resistance and metal insert properties are provided.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: March 6, 1984
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kenji Ema, Junji Hara, Shuhei Ikado, Hideo Kawashima, Tomohide Yokoo
  • Phenolic resin compositions
    Patent number: 4378450
    Abstract: Phenolic resin compositions comprising a polymeric substance having a phenolic OH group such as phenol resins, and a rubber having an epoxy group and an epoxy equivalent of 500 to 30,000 such as butadiene copolymers, acrylic copolymers, chloroprene copolymers and urethane copolymers are provided. These resin compositions exhibit improved properties having overcome the drawback of brittle properties intrinsic of conventional phenolic resins, and also exhibit cold resistance; hence they are used as molding materials, laminating materials, casting materials, binders, etc. Further, molding resin compositions having improved solvent-resistance and metal insert properties are provided.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: March 29, 1983
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kenji Ema, Junji Hara, Shuhei Ikado, Hideo Kawashima, Tomohide Yokoo