Patents by Inventor Shigetoshi Hazama

Shigetoshi Hazama 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).

  • Electronic calculating machine
    Patent number: D243249
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: February 1, 1977
    Assignee: Sharp Corporation
    Inventors: Shigetoshi Hazama, Masafumi Yamagami
  • Electronic calculating machine
    Patent number: D243250
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: February 1, 1977
    Assignee: Sharp Corporation
    Inventor: Shigetoshi Hazama
  • Electronic calculating machine
    Patent number: D243251
    Type: Grant
    Filed: August 21, 1975
    Date of Patent: February 1, 1977
    Assignee: Sharp Corporation
    Inventors: Shigetoshi Hazama, Junichi Sakamoto
  • Electronic calculating machine
    Patent number: D247391
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: February 28, 1978
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shigetoshi Hazama, Masafumi Yamagami
  • Electronic calculating machine
    Patent number: D248995
    Type: Grant
    Filed: June 23, 1977
    Date of Patent: August 15, 1978
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shigetoshi Hazama, Seiichiro Nishiguchi, Yoshiaki Kobayashi
  • Electronic calculating machine
    Patent number: D249093
    Type: Grant
    Filed: August 23, 1977
    Date of Patent: August 22, 1978
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shigetoshi Hazama, Matafumi Ikeda, Masafumi Yamagami, Yoshiaki Kobayashi
  • Electronic calculating machine
    Patent number: D251272
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: March 6, 1979
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shigetoshi Hazama, Matafumi Ikeda, Masafumi Yamagami, Yoshiaki Kobayashi
  • Calculating machine
    Patent number: D255125
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: May 27, 1980
    Assignee: Sharp Kabushiki Kaisha (Sharp Corp.)
    Inventors: Shigetoshi Hazama, Matafumi Ikeda
  • Oil heater
    Patent number: D276363
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: November 13, 1984
    Assignee: Sharp Corporation
    Inventors: Shigetoshi Hazama, Shuzo Sawa, Matafumi Ikeda, Akira Esaki
  • Oil heater
    Patent number: D276365
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: November 13, 1984
    Assignee: Sharp Corporation
    Inventors: Shigetoshi Hazama, Shuzo Sawa, Matafumi Ikeda, Akira Esaki
  • Oil heater
    Patent number: D276366
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: November 13, 1984
    Assignee: Sharp Corporation
    Inventors: Shigetoshi Hazama, Shuzo Sawa, Matafumi Ikeda, Akira Esaki
  • Oil heater
    Patent number: D277600
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: February 12, 1985
    Assignee: Sharp Corporation
    Inventors: Shigetoshi Hazama, Shuzo Sawa, Matafumi Ikeda, Akira Esaki