Patents by Inventor Shu Fujiwara

Shu Fujiwara 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).

  • Pneumatic tire
    Patent number: 8297323
    Abstract: The present invention provides a pneumatic tire having: a circumferential groove continuously extending in the tire circumferential direction in a ground contact surface of a tread portion; and a resonator provided in a land portion and constituted of a resonance cell portion opened to a ground contact region at a position distanced from the circumferential groove and a siping portion making the resonance cell portion communicate with the circumferential groove, wherein change in a tread pattern as time lapses can be alleviated without scarifying an effect of reducing pipe resonance sounds. Specifically, an opening width of the siping portion at the ground contact surface of the tread portion is designed to change in the longitudinal direction thereof such that the opening with is relatively narrow on the side of the circumferential groove and relatively wide on the side of the resonance cell portion.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: October 30, 2012
    Assignee: Bridgestone Corporation
    Inventors: Fumio Takahashi, Shu Fujiwara, Shu Nagai, Takanari Saguchi, Naoya Ochi, Yukihiro Kiwaki
  • METHOD OF DESIGNING RESONATOR AND PNEUMATIC TIRE HAVING THE RESONATOR
    Publication number: 20120067479
    Abstract: The present invention aims to provide a method of designing a resonator more simply by deriving a non-transcendental model formula, and to provide a pneumatic tire having the resonator designed by this method.
    Type: Application
    Filed: May 8, 2010
    Publication date: March 22, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yoshiyuki Waki, Shu Fujiwara, Takanari Saguchi
  • PNEUMATIC TIRE
    Publication number: 20100175799
    Abstract: The present invention provides a pneumatic tire having: a circumferential groove continuously extending in the tire circumferential direction in a ground contact surface of a tread portion; and a resonator provided in a land portion and constituted of a resonance cell portion opened to a ground contact region at a position distanced from the circumferential groove and a siping portion making the resonance cell portion communicate with the circumferential groove, wherein change in a tread pattern as time lapses can be alleviated without scarifying an effect of reducing pipe resonance sounds. Specifically, an opening width of the siping portion at the ground contact surface of the tread portion is designed to change in the longitudinal direction thereof such that the opening with is relatively narrow on the side of the circumferential groove and relatively wide on the side of the resonance cell portion.
    Type: Application
    Filed: February 19, 2008
    Publication date: July 15, 2010
    Applicant: Bridgestone Corporation
    Inventors: Fumio Takahashi, Shu Fujiwara, Shu Nagai, Takanari Saguchi, Naoya Ochi, Yukihiro Kiwaki
  • Anti-MRSA compound
    Patent number: 5399723
    Abstract: An anti-MRSA compound comprising of the formula ##STR1## which is generally extracted from the root of Sophora exigua. The usage of this compound is for methicillin-resistant Staphylococcus aureus.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: March 21, 1995
    Assignee: Tsujimoto Kagaku Kogyo Co., Ltd.
    Inventors: Munekazu Iinuma, Hironori Tsuchiya, Masaru Sato, Shu Fujiwara