Patents by Inventor Joseph Marden

Joseph Marden 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).

  • Exfoliation stone
    Patent number: D662670
    Type: Grant
    Filed: October 2, 2011
    Date of Patent: June 26, 2012
    Assignee: Royal Products USA, LLC
    Inventor: Joseph Marden
  • Exfoliation stone
    Patent number: D676605
    Type: Grant
    Filed: October 2, 2011
    Date of Patent: February 19, 2013
    Assignee: Royal Products USA, LLC
    Inventor: Joseph Marden