Patents by Inventor Bruce Sienkowski

Bruce Sienkowski 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).

  • Chair
    Patent number: D528813
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: September 26, 2006
    Inventors: Bruce Sienkowski, Timothy V. Peitz
  • Chair
    Patent number: D576817
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: September 16, 2008
    Assignee: Michigan Tube Swagers & Fabricators, Inc.
    Inventor: Bruce Sienkowski
  • Chair
    Patent number: D332356
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: January 12, 1993
    Assignee: Charlotte, Inc.
    Inventor: Bruce Sienkowski
  • UV lamp housing
    Patent number: D750310
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: February 23, 2016
    Assignee: UV Partners, Inc.
    Inventors: Theodore John Cole, William T. Oltman, Bruce Sienkowski
  • Mobile storage unit with a seating element
    Patent number: D796872
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 12, 2017
    Inventors: Bruce Sienkowski, Mark Gabbertas