Patents by Inventor Takuto KAWASHIMA

Takuto KAWASHIMA 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).

  • Publication number: 20240157735
    Abstract: A pneumatic tire according to the present disclosure includes a sound absorber disposed on the tire inner surface. The sound absorber is a sponge material, and in a reference state, the sponge material is rectangular in a cross-section in the tire width direction, the ratio t/w of the thickness t of the sponge material to the width w of the sponge material in the tire width direction is from 0.4 to 0.55, the thickness t of the sponge material is 30 mm or less, the volume ratio of the sponge material is from 5% to 8%, the elongation at break of the sponge material is from 200% to 250%, and the hardness of the sponge material is from 80 N to 140 N.
    Type: Application
    Filed: October 28, 2021
    Publication date: May 16, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Taishi TAKENAKA, Takuto KAWASHIMA
  • Publication number: 20160159149
    Abstract: A run-flat tire (10) includes: a pair of bead portions (12); side wall portions 14 that are respectively connected to the bead portions (12); a carcass (16) that spans between the pair of bead portions (12) and that includes a main body portion (16A) positioned between bead cores (24), and a folded-back portion (16B) folded back from an inner side toward an outer side about each bead core (24); a tread (18) that is provided at the tire radial direction outer side of the main body portion (16A); a side reinforcing layer (20) that is disposed at a tire width direction inner side of the main body portion (16A) and that is configured so as to respectively gradually decrease in thickness toward a crown portion (16C) of the carcass (16) and toward the bead portion (12); and side rubber (22) (a side layer) that is disposed in the side wall portion (14) at the tire outer side of the main body portion (16A), that configures a tire outer face, and that satisfies Gs/Gt6?0.
    Type: Application
    Filed: June 17, 2014
    Publication date: June 9, 2016
    Inventors: Takuto KAWASHIMA, Shinichiro KAWAKAMI
  • Patent number: D805466
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: December 19, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shintaro Hayashi, Isao Kuwayama, Takuto Kawashima