Patents by Inventor Masafumi Yamagami

Masafumi Yamagami 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: 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: 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
  • Combined electronic calculator and clock
    Patent number: D249822
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: October 3, 1978
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshihisa Ohie, Masafumi Yamagami
  • Digital clock
    Patent number: D250176
    Type: Grant
    Filed: January 28, 1977
    Date of Patent: November 7, 1978
    Assignee: Sharp Kabushiki Kaisha
    Inventors: 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
  • Digital watch
    Patent number: D255877
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: July 15, 1980
    Assignee: Sharp Corporation
    Inventor: Masafumi Yamagami
  • Electronic calculating machine
    Patent number: D256695
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: September 2, 1980
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masafumi Yamagami
  • Combined electronic calculating machine and clock
    Patent number: D256924
    Type: Grant
    Filed: May 16, 1978
    Date of Patent: September 16, 1980
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshihisa Ohie, Masafumi Yamagami
  • Watch
    Patent number: D257003
    Type: Grant
    Filed: August 3, 1978
    Date of Patent: September 23, 1980
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Yamagami, Shinichi Yokoyama
  • Electronic calculating machine
    Patent number: D258892
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: April 14, 1981
    Assignee: Sharp Corporation
    Inventors: Yoshihisa Ohie, Masafumi Yamagami
  • Digital watch
    Patent number: D261731
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: November 10, 1981
    Assignee: Sharp Corporation
    Inventors: Masafumi Yamagami, Shigeaki Hayashi, Harumi Tatsugami
  • Digital watch
    Patent number: D261732
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: November 10, 1981
    Assignee: Sharp Corporation
    Inventors: Masafumi Yamagami, Shigeaki Hayashi, Harumi Tatsugami
  • Digital watch
    Patent number: D261994
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: November 24, 1981
    Assignee: Sharp Corporation
    Inventors: Masafumi Yamagami, Shigeaki Hayashi, Harumi Tatsugami
  • Electronic calculating machine
    Patent number: D262140
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: December 1, 1981
    Assignee: Sharp Corporation
    Inventors: Masafumi Yamagami, Shigeru Kurozumi
  • Electronic calculating machine
    Patent number: D265837
    Type: Grant
    Filed: January 9, 1980
    Date of Patent: August 17, 1982
    Assignee: Sharp Corporation
    Inventor: Masafumi Yamagami
  • Electronic calculator
    Patent number: D269355
    Type: Grant
    Filed: September 2, 1981
    Date of Patent: June 14, 1983
    Assignee: Sharp Corporation
    Inventor: Masafumi Yamagami
  • Electronic calculator
    Patent number: D273307
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: April 3, 1984
    Assignee: Sharp Corporation
    Inventor: Masafumi Yamagami