Patents by Inventor Kohtaroh Iwabuchi

Kohtaroh 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).

  • Pneumatic radial tire for heavy-duty vehicles
    Patent number: 5211780
    Abstract: A pneumatic radial tire for heavy-duty vehicles in which reinforcement belts comprising metal cords are disposed in the tread portion, and a plurality of main grooves extending in the circumferential direction of the tire are provided in the tread surface. In addition, recessed and projecting portions are provided on the edges of the tread surface in a zig-zag fashion along the circumferential direction of the tire.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: May 18, 1993
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Kazuyuki Kabe, Nobuhiro Yamashita, Izumi Kuramochi, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D451058
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: November 27, 2001
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Masahiro Ebiko, Sadakazu Takei, Takumi Morito, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D458587
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: June 11, 2002
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Michio Shimizu, Masashi Wakatsuki, Hiroshi Tokizaki, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D341361
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: November 16, 1993
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Izumi Kuramochi, Kenichirou Nishida, Kohtaroh Iwabuchi, Susumu Watanabe
  • Automobile tire
    Patent number: D345132
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: March 15, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Izumi Kuramochi, Aiko Ameda, Kohtaroh Iwabuchi, Susumu Watanabe
  • Automobile tire
    Patent number: D348862
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: July 19, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yasujiro Daisho, Susumu Watanabe, Izumi Kuramochi, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D348863
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: July 19, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hiroyuki Narabayashi, Izumi Kuramochi, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D349671
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: August 16, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Shinzi Seimiya, Izumi Kuramochi, Kohtaroh Iwabuchi, Hisaya Morishita
  • Automobile tire
    Patent number: D349672
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: August 16, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Shinzi Seimiya, Izumi Kuramochi, Kohtaroh Iwabuchi, Hisaya Morishita
  • Automobile tire
    Patent number: D349673
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: August 16, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Shinzi Seimiya, Izumi Kuramochi, Kohtaroh Iwabuchi, Hisaya Morishita
  • Automobile tire
    Patent number: D349674
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: August 16, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Shinzi Seimiya, Izumi Kuramochi, Kohtaroh Iwabuchi, Hisaya Morishita
  • Automobile tire
    Patent number: D380181
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: June 24, 1997
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hirokatsu Maruyama, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D384011
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: September 23, 1997
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Akira Kawamata, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D384012
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: September 23, 1997
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Izumi Kuramochi, Yukio Kuroda, Masayuki Oshima, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D384311
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: September 30, 1997
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hirokatsu Maruyama, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D389103
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: January 13, 1998
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yoshimasa Hashimoto, Tetsuya Kuze, Toshihiko Suzuki, Izumi Kuramochi, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D426498
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: June 13, 2000
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Masahiro Ebiko, Richiro Mama, Takumi Morito, Kohtaroh Iwabuchi
  • Automobile tire
    Patent number: D427117
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: June 27, 2000
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Masakuni Kawamura, Hikomitsu Noji, Kohtaroh Iwabuchi, Ichiro Akiyama