Patents by Inventor Roger J. Lenkoff

Roger J. Lenkoff 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).

  • Combined sticker and invisible ink game
    Patent number: 6152449
    Abstract: An association game including an overall image a portion of which is in latent invisible form to be developed by a marking means to provide an identifying configuration for a visible portion movably compatible with the latent image developed portion.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: November 28, 2000
    Assignee: Stry-Lenkoff Co.
    Inventor: Roger J. Lenkoff
  • Greeting card with compatible puzzle message
    Patent number: 5261703
    Abstract: A greeting card with a compatible puzzle message including a visible opening first message, a visible outline to be completed as a second visible message compatible with the first message and means associated with the card to be used by the card recipient to complete the second compatible message within the visible outline.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: November 16, 1993
    Assignee: Stry-Lenkoff Company
    Inventor: Roger J. Lenkoff
  • Puzzle game
    Patent number: 4586714
    Abstract: A puzzle game and a method of manufacturing the same including separate geometric segments of a total picture image removably fastened in jumbled fashion in a first defined area and a visibly marked grid in a second defined area forming the same geometrically shaped segments as in the first area whereby the jumbled segments can be transferred from the first area to the second area to form a correct picture image within the visible grid.
    Type: Grant
    Filed: December 13, 1984
    Date of Patent: May 6, 1986
    Assignee: Stry-Lenkoff Co.
    Inventors: Leon G. Lenkoff, Roger J. Lenkoff, Patrick J. Garry