Patents by Inventor Brent Shigenaka

Brent Shigenaka 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).

  • Backpack with speakers
    Patent number: D489174
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: May 4, 2004
    Assignee: S.C.I. Promotion Group, LLC
    Inventors: Karen Shigenaka, Brent Shigenaka, Kevin Ray