Patents by Inventor Richard L. Knutson

Richard L. Knutson 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).

  • Eight sided container
    Patent number: D586124
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: February 10, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson
  • Eight sided food container
    Patent number: D597310
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 4, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson
  • Seven sided food container
    Patent number: D597311
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 4, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson
  • Six sided food container
    Patent number: D597739
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 11, 2009
    Assignee: Decra Stone, Inc.
    Inventors: Lawrence M. Knutson, Richard L. Knutson, Sheryl F. Knutson