Patents by Inventor Phillip H. Whitford

Phillip H. Whitford 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).

  • Patent number: D314439
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: February 5, 1991
    Assignee: CertainTeed Corporation
    Inventors: Robert L. Jenkins, Husnu M. Kalkanoglu, John R. Klein, deceased, Michael J. Noone, Kermit E. Stahl, Phillip H. Whitford
  • Patent number: D314628
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: February 12, 1991
    Assignee: CertainTeed Corporation
    Inventors: Robert L. Jenkins, Husnu M. Kalkanoglu, John R. Klein, deceased, Michael J. Noone, Kermit E. Stahl, Phillip H. Whitford
  • Patent number: D317506
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: June 11, 1991
    Assignee: CertainTeed Corporation
    Inventors: Robert L. Jenkins, Husnuo M. Kalkanoglu, John R. Klein, deceased, Michael J. Noone, Kermit E. Stahl, Phillip H. Whitford