Patents by Inventor Yoshiaki Someya

Yoshiaki Someya 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).

  • Vulcanization accelerator system for rubber compositions
    Patent number: 4026878
    Abstract: Rubber compositions containing therein as a source of carbon disulfide a compound selected from the group consisting of cyclic bis (dithiocarbamic acid) metal salts and cyclic or non-cyclic dithiocarbamic-xanthogenic acid metal salts and an amine-isocyanate addition compound as a vulcanization accelerator system having excellent scorching stability with rapid vulcanization at usual vulcanization temperatures.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: May 31, 1977
    Assignee: The Yokohama Rubber Co. Ltd.
    Inventors: Kunio Kageyama, Hiroshi Hirakawa, Masatake Ozaki, Iwao Sugiyama, Mitsuharu Iwakura, Yoshiaki Someya
  • Vulcanization accelerator system for rubber compositions
    Patent number: 4026877
    Abstract: Rubber compositions containing therein as a source of carbon disulfide at least one compound selected from the group consisting of cyclic bis (thiocarbamoyl) mono- or di-sulfides, cyclic bis (thioxanthogenyl) mono- or di-sulfides, and cyclic (thiocarbamoyl-thioxanthogenyl) mono- or di-sulfides and an amine-isocyanate addition compound as a vulcanization accelerator system having excellent scorching stability with rapid vulcanization at usual vulcanization temperatures.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: May 31, 1977
    Assignee: The Yokohama Rubber Co. Ltd.
    Inventors: Kunio Kageyama, Hiroshi Hirakawa, Masatake Ozaki, Iwao Sugiyama, Mitsuharu Iwakura, Yoshiaki Someya
  • Process for the preparation of hydroxyl-terminated liquid polymers
    Patent number: 3965140
    Abstract: A process for the preparation of hydroxyl-terminated liquid polymers by polymerizing a conjugated diene monomer or a mixture thereof with a vinyl monomer using hydrogen peroxide as a radical initiator in the presence of a member selected from the halogen-containing compound of nickel, palladium, platinum and silver, and the nitrate and phosphate of silver.
    Type: Grant
    Filed: May 16, 1974
    Date of Patent: June 22, 1976
    Assignee: The Yokohama Rubber Co. Ltd.
    Inventors: Yoshiaki Someya, Noriaki Tateno, Kunio Kageyama