Patents by Inventor Robert Clark Workman

Robert Clark Workman 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).

  • Sport bottle
    Patent number: D781654
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: March 21, 2017
    Assignee: Spectrum Print Graphics, LLC
    Inventors: Conrad Marquard, Robert Clark Workman
  • Sport bottle
    Patent number: RE48195
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: September 8, 2020
    Assignee: WAVE HYDRATION LLC
    Inventors: Conrad Marquard, Robert Clark Workman