Patents by Inventor Narutoshi Okazaki

Narutoshi Okazaki 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).

  • Microphone
    Patent number: D583806
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: December 30, 2008
    Assignee: Toa Corporation
    Inventors: Narutoshi Okazaki, Shuichi Okamura
  • Microphone
    Patent number: D584721
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: January 13, 2009
    Assignee: TOA Corporation
    Inventors: Narutoshi Okazaki, Shuichi Okamura
  • Speaker
    Patent number: D702212
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 8, 2014
    Assignee: TOA Corporation
    Inventors: Narutoshi Okazaki, Shuichi Okamura