Patents by Inventor Paul Grassl

Paul Grassl 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).

  • Valve seat
    Patent number: D910820
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: February 16, 2021
    Assignee: DIAMOND INNOVATIONS, INC.
    Inventor: Paul Grassl
  • Valve assembly
    Patent number: D920476
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: May 25, 2021
    Assignee: DIAMOND INNOVATIONS, INC.
    Inventor: Paul Grassl