Patents by Inventor Keisuke Kidono

Keisuke Kidono 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 and pneumatic tire using the same
    Patent number: 8580885
    Abstract: This invention provides a rubber composition highly balancing flexibility at a low temperature and a low rolling resistance, which is formed by compounding a low-molecular weight conjugated diene-based polymer (B) having at least one functional group, an aromatic vinyl compound content of less than 5% by mass and a weight average molecular weight as measured without terminating by modification through a gel permeation chromatography and converted to polystyrene of not less than 2,000 but less than 150,000 and a filler (C) into a high-molecular weight rubber component (A) having a weight average molecular weight as measured without terminating by modification through a gel permeation chromatography and converted to polystyrene of not less than 150,000.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: November 12, 2013
    Assignee: Bridgestone Corporation
    Inventors: Fuminori Ohta, Koji Masaki, Keisuke Kidono
  • RUBBER COMPOSITION AND PNEUMATIC TIRE USING THE SAME
    Publication number: 20100006199
    Abstract: This invention provides a rubber composition highly balancing flexibility at a low temperature and a low rolling resistance, which is formed by compounding a low-molecular weight conjugated diene-based polymer (B) having at least one functional group, an aromatic vinyl compound content of less than 5% by mass and a weight average molecular weight as measured without terminating by modification through a gel permeation chromatography and converted to polystyrene of not less than 2,000 but less than 150,000 and a filler (C) into a high-molecular weight rubber component (A) having a weight average molecular weight as measured without terminating by modification through a gel permeation chromatography and converted to polystyrene of not less than 150,000.
    Type: Application
    Filed: September 4, 2007
    Publication date: January 14, 2010
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Fuminori Ohta, Koji Masaki, Keisuke Kidono