Patents by Inventor Kotaro Iwabuchi

Kotaro Iwabuchi 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).

  • Patent number: 11999199
    Abstract: A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction and a land portion defined by the circumferential main groove. The circumferential main groove includes a groove opening portion and a groove bottom portion each having a zigzag shape or a wave-like shape with an amplitude in a tire width direction. An outer maximum amplitude position of an outer edge portion in the groove opening portion is disposed to be offset in a tire circumferential direction with respect to an outer maximum amplitude position of an outer edge portion of the corresponding groove bottom portion.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: June 4, 2024
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Hironori Wada, Kotaro Iwabuchi
  • Publication number: 20220032691
    Abstract: A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction and a land portion defined by the circumferential main groove. The circumferential main groove includes a groove opening portion and a groove bottom portion each having a zigzag shape or a wave-like shape with an amplitude in a tire width direction. An outer maximum amplitude position of an outer edge portion in the groove opening portion is disposed to be offset in a tire circumferential direction with respect to an outer maximum amplitude position of an outer edge portion of the corresponding groove bottom portion.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 3, 2022
    Inventors: Hironori WADA, Kotaro IWABUCHI
  • Patent number: 9278580
    Abstract: A pneumatic tire including a first row of blocks arranged in a substantially central region of a tread of the pneumatic tire, wherein the first row of blocks includes a plurality of first blocks; a plurality of first grooves, each arranged between two adjacent first blocks; a plurality of second rows of blocks each including a plurality of second blocks, each arranged on either side of the first row of blocks; a plurality of second grooves, each arranged between the first row of blocks and each of the second rows of blocks; and a plurality of third grooves, wherein each third groove is arranged between two adjacent second blocks, the third grooves including a plurality of fourth grooves and a plurality of fifth grooves, with each fourth groove being narrower than each fifth groove, and the fourth groove and fifth groove being arranged alternately.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: March 8, 2016
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Isamu Kishizoe, Izumi Kuramochi, Kotaro Iwabuchi, Takumi Morito, Koji Watanabe, Yoshimasa Hashimoto
  • Patent number: D529863
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: October 10, 2006
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Izumi Kuramochi, Kotaro Iwabuchi, Takumi Morito, Kouji Watanabe, Yoshimasa Hashimoto, Isamu Kishizoe
  • Patent number: D819676
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: June 5, 2018
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Kotaro Iwabuchi
  • Patent number: D829748
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: October 2, 2018
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Kotaro Iwabuchi
  • Patent number: D830394
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: October 9, 2018
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Kotaro Iwabuchi
  • Patent number: D837233
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: January 1, 2019
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Kotaro Iwabuchi
  • Patent number: D860924
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: September 24, 2019
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Hideki Hamanaka, Kotaro Iwabuchi
  • Patent number: D862377
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: October 8, 2019
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Hideki Hamanaka, Kotaro Iwabuchi
  • Patent number: D868683
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: December 3, 2019
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Hideki Hamanaka, Kotaro Iwabuchi
  • Patent number: D882500
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: April 28, 2020
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Mina Fukuda, Reika Tokunaga, Kotaro Iwabuchi
  • Patent number: D887960
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: June 23, 2020
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Hideki Hamanaka, Kotaro Iwabuchi
  • Patent number: D897941
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: October 6, 2020
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Hideki Hamanaka, Kotaro Iwabuchi
  • Patent number: D974280
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: January 3, 2023
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Kotaro Iwabuchi, Hironori Wada
  • Patent number: D974999
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: January 10, 2023
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Shun Sato, Kotaro Iwabuchi
  • Patent number: D975000
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: January 10, 2023
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Shun Sato, Kotaro Iwabuchi
  • Patent number: D988979
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: June 13, 2023
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Reika Tokunaga, Kotaro Iwabuchi
  • Patent number: D1000361
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: October 3, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Reika Tokunaga, Kotaro Iwabuchi
  • Patent number: D1016731
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: March 5, 2024
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Kotaro Iwabuchi, Hironori Wada