Patents by Inventor Christopher Michael Gronkowski

Christopher Michael Gronkowski 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).

  • Shaker cup
    Patent number: D859919
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: September 17, 2019
    Assignee: ICE SHAKER, LLC
    Inventor: Christopher Michael Gronkowski
  • Cup agitator
    Patent number: D867804
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: November 26, 2019
    Assignee: ICE SHAKER, LLC
    Inventor: Christopher Michael Gronkowski