Patents by Inventor Hajime Tokyo

Hajime Tokyo 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).

  • METHOD FOR PRODUCING GRAFT COPOLYMER, GRAFT COPOLYMER OBTAINED BY THE METHOD, RUBBER COMPOSITION CONTAINING THE GRAFT COPOLYMER, AND TIRE
    Publication number: 20110224351
    Abstract: Provided are a method of producing a graft copolymer, the method involving subjecting a radically polymerizable monomer to living radical graft polymerization with a rubber component formed of a natural rubber and/or a synthetic diene-based rubber in an aqueous medium in the presence of a polymerization control agent, a rubber composition containing the graft copolymer obtained by the method, and a tire obtained by using the rubber composition in any one of its tire members.
    Type: Application
    Filed: October 1, 2009
    Publication date: September 15, 2011
    Applicants: BRIDGESTONE CORPORATION, OTSUKA CHEMICAL CO., LTD.
    Inventors: Noriko Mori, Hajime Tokyo, Takashi Kameshima