Patents by Inventor Hisao Ono

Hisao Ono 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).

  • Polymer particles and process for producing the same
    Patent number: 4742137
    Abstract: An aqueous dispersion of polymer particles each consisting essentially of (a) a syndiotactic 1,2-polybutadiene having 70% or more of unsaturated hydrocarbon groups in the side chains and having a melting point of 70.degree. C. or higher, (b) a polymer mixture of said polybutadiene (a) and other polymer in the form that (a) and (b) co-exist in the same particle, or (c) a copolymer obtained by graft-polymerizing a conjugated diene and/or other polymerizable monomer on said polybutadiene (a), each of said particles having an average diameter of 10 .mu.m or less.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: May 3, 1988
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Hisao Ono, Nobuyuki Ito, Kiyoshi Kasai, Nobuo Sakurai, Eitaro Okuya
  • Diene polymers and process for producing the same
    Patent number: 4588782
    Abstract: A diene polymer produced by polymerizing a conjugated diene monomer in a solvent solution of an active lithium-terminated polymer in the presence of a catalyst consisting of (A) a cobalt compound and (B) carbon disulfide and/or phenylisothiocyanic acid. The diene polymer comprises a 1,2-polybutadiene portion having a high percentage of vinyl conformation. The diene polymer has substantially no mercaptan compound.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: May 13, 1986
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Hisao Ono, Fumio Tsutsumi, Mitsuhiko Sakakibara, Eitaro Okuya