Patents by Inventor Takafumi Fueki

Takafumi Fueki 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).

  • Rubber composition
    Patent number: 6699935
    Abstract: It is an object of the present invention to provide a rubber composition which can give a vulcanized rubber with low rolling resistance and excellent wet skid resistance and wear resistance, which is particularly useful for automobile tire treads and the like. The rubber composition of the invention comprises (1) a crosslinked rubber particle containing, as repeating units, 40 to 79.99% by weight of a monomer unit formed by a conjugated diene such as 1,3-butadiene, 20 to 50% by weight of a monomer unit formed by an aromatic vinyl monomer such as styrene and 0.01 to 10% by weight of a monomer unit formed by a monomer having at least two polymerizable unsaturated groups such as divinylbenzene, and (2) a conjugated diene/aromatic vinyl copolymeric rubber whose vinyl content of the conjugated diene monomer unit is 10 to 30% and whose 1,4-trans bond content is more than 55%, such as styrene-butadiene copolymeric rubber.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: March 2, 2004
    Assignee: JSR Corporation
    Inventors: Hiroshi Akema, Toshihiro Tadaki, Yoshiyuki Udagawa, Tomohisa Konno, Takafumi Fueki, Hajime Kondou
  • Rubber composition
    Publication number: 20030125467
    Abstract: It is an object of the present invention to provide a rubber composition which can give a vulcanized rubber with low rolling resistance and excellent wet skid resistance and wear resistance, which is particularly useful for automobile tire treads and the like.
    Type: Application
    Filed: February 28, 2002
    Publication date: July 3, 2003
    Inventors: Hiroshi Akema, Toshihiro Tadaki, Yoshiyuki Udagawa, Tomohisa Konno, Takafumi Fueki, Hajime Kondou