Patents by Inventor Robert Allen Keller

Robert Allen Keller 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).

  • Papermaking belts comprising striated monofilaments
    Patent number: 6352772
    Abstract: Polymeric monofilaments having 3 to 12 circumferential striations exhibit excellent performance when used in woven papermaking belts.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: March 5, 2002
    Assignee: Shakespeare
    Inventor: Robert Allen Keller
  • Striated monofilaments useful in the formation of papermaking belts
    Patent number: 5985450
    Abstract: Polymeric monofilaments having 3 to 12 circumferential striations exhibit excellent performance when used in woven papermaking belts.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: November 16, 1999
    Assignee: Shakespeare
    Inventor: Robert Allen Keller