Patents by Inventor Michael O. Rojas

Michael O. Rojas 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).

  • Weight plate with one grip opening
    Patent number: D441812
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: May 8, 2001
    Assignee: Iron Grip Barbell Company Company, Inc.
    Inventors: Michael O. Rojas, Scott J. Frasco