Patents by Inventor Richard M. Liptak

Richard M. Liptak 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: 4125243
    Abstract: A sign holder is disclosed which has a generally flat base of resilient material and two projections thereon. The first projection has a convex, sloped side surface, and the second projection has a corresponding concave, sloped side surface spaced from the convex side surface of the first projection. An arcuate wedge-shaped trough is formed between the side surfaces of the projections. The edge of a sign card or board is inserted in the trough and removably held upright thereby. The wedge shape of the trough and the resilient material of the base combine to firmly grip the edge of the sign card.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: November 14, 1978
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D265448
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: July 20, 1982
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D265485
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: July 20, 1982
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D267383
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: December 28, 1982
    Assignee: Integral Design, Inc.
    Inventors: Richard M. Liptak, Robert S. Liptak
  • Patent number: D267394
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: December 28, 1982
    Assignee: Integral Design, Inc.
    Inventors: Richard M. Liptak, Thomas P. Liptak
  • Patent number: D267416
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: December 28, 1982
    Assignee: Integral Design, Inc.
    Inventors: Richard M. Liptak, Robert S. Liptak
  • Patent number: D267618
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: January 18, 1983
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D274296
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: June 19, 1984
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D282182
    Type: Grant
    Filed: August 18, 1983
    Date of Patent: January 14, 1986
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D293280
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: December 22, 1987
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D308784
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: June 26, 1990
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D321446
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: November 12, 1991
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D321614
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: November 19, 1991
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D330474
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: October 27, 1992
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak
  • Patent number: D334676
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: April 13, 1993
    Assignee: Integral Design, Inc.
    Inventor: Richard M. Liptak