Patents by Inventor Derek J. Knight

Derek J. Knight 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).

  • Oil burner assembly
    Patent number: D665901
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: August 21, 2012
    Assignee: Kärcher North America, Inc.
    Inventors: Paul Linton, Thomas E. Corsine, Zhakhary Polovin, Derek J. Knight
  • Pressure washer
    Patent number: D735959
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: August 4, 2015
    Assignee: Kärcher North America, Inc.
    Inventors: Paul W. Linton, Thomas E. Corsine, Chris Alan Valentine, Derek J. Knight