Patents by Inventor Derrick S. Obatake

Derrick S. Obatake 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).

  • Cut for a crown of a gemstone
    Patent number: D380405
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: July 1, 1997
    Inventor: Derrick S. Obatake
  • Expandable drinking flask
    Patent number: D786017
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 9, 2017
    Inventor: Derrick S. Obatake