Patents by Inventor Akihisa Shibayama

Akihisa Shibayama 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).

  • Sphygmomanometer
    Patent number: D834716
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: November 27, 2018
    Assignee: A&D COMPANY, LIMITED
    Inventors: Akihisa Shibayama, Kazuhiko Koyano
  • Sphygmomanometer
    Patent number: D851768
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 18, 2019
    Assignee: A&D COMPANY, LIMITED
    Inventors: Akihisa Shibayama, Kazuhiko Koyano
  • Sphygmomanometer
    Patent number: D857204
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: August 20, 2019
    Assignee: A&D COMPANY, LIMITED
    Inventors: Daiki Akamatsu, Akihisa Shibayama, Kazuhiko Koyano