Patents by Inventor Robert E. Ward, Sr.

Robert E. Ward, Sr. 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).

  • Abrading wheel having individual sheet members
    Patent number: 5643068
    Abstract: The invention relates to an abrasive sheet member produced from the interstitial sheet material between circular abrasive discs during converting operations. The sheet material includes at least three projecting ends separated from each other by a boundary having a radius of curvature with a center of curvature located outside the sheet member.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: July 1, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert E. Ward, Sr.
  • Abrasive sheet with die-cut pattern
    Patent number: D351773
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: October 25, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert E. Ward, Sr.