Patents by Inventor Masuo Sugawara

Masuo Sugawara 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).

  • Blood flow detector
    Patent number: D262402
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: December 22, 1981
    Assignee: Hayashi Denki Company Ltd
    Inventors: Masuo Sugawara, Hiroji Matsumoto
  • Blood flow detector
    Patent number: D262738
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: January 19, 1982
    Assignee: Hayashi Denki Company Ltd.
    Inventors: Masuo Sugawara, Hiroji Matsumoto
  • Blood flow detector
    Patent number: D264623
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: May 25, 1982
    Assignee: Hayashi Denki Company Ltd.
    Inventors: Masuo Sugawara, Hiroji Matsumoto
  • Fetus pulse and blood flow detector
    Patent number: D266270
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: September 21, 1982
    Assignee: Hayashi Denki Company Ltd.
    Inventors: Masuo Sugawara, Hiroji Matsumoto