Patents by Inventor Thomas A Kaczkowski

Thomas A Kaczkowski 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).

  • Light fixture
    Patent number: D689647
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: September 10, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Robert L. Brott, Karl J. Geisler, Raymond P. Johnston, Thomas A Kaczkowski, Jon A. Kirschhoffer, Phillip D. Ziolkowski
  • Lightguide lighting assembly
    Patent number: D693045
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: November 5, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Jon A. Kirschhoffer, Robert L. Brott, Kayla A. Hagens, Karl J. L. Geisler, Raymond P. Johnston, Steven G. Lucht, Phillip D. Ziolkowski, Thomas A. Kaczkowski