Patents by Inventor Stephen E. Martin

Stephen E. Martin 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: 5544881
    Abstract: A scratch-off game card includes first and second sections. The first section is provided with a first set of game data covered by a substantially opaque scratch-off material. The second section is provided with a second set of game data covered by a substantially transparent material. The second section is further provided with a substantially transparent coating for marking the second section by rubbing with an object. The markings so made are erasable by, for example, pencil eraser or the like material.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: August 13, 1996
    Assignee: Webcraft Technologies, Inc.
    Inventors: Louis Rua, Jr., Stephen E. Martin
  • Patent number: 5542710
    Abstract: A piece of printed material has preprinted, hidden data and includes a structure which prevents premature revealing of the hidden data. For example, an instant scratch-off lottery ticket according to the invention includes a substrate, an ink layer disposed on the substrate, the ink layer including hidden lottery data. An elemental-metal-free ink-receptive layer is provided between the ink layer and the substrate, whereby the metal-free layer prevents migration of ink from the ink layer through the substrate when the substrate has been contacted with a solvent.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: August 6, 1996
    Assignee: Webcraft Technologies, Inc.
    Inventors: Stanford B. Silverschotz, Louis Rua, Jr., David M. Polunas, Stephen E. Martin
  • Patent number: D449135
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: October 9, 2001
    Assignee: Libertyville Saddle Shop, Inc.
    Inventors: Jack L. Martin, Stephen E. Martin
  • Patent number: D449713
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: October 23, 2001
    Assignee: Libertyville, Saddle Shop, Inc.
    Inventors: Jack L. Martin, Stephen E. Martin