Patents by Inventor Ralph Shaffer

Ralph Shaffer 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: 4674749
    Abstract: A maze puzzle, characterized by a quality of flexibility, pliancy or suppleness, includes a maze or labyrinth consisting of a network of passages having flexible walls that are manipulable by the player to effect movement therethrough of a solving piece such as a ball. The walls of the maze puzzle preferably are of flexible, double layered fabric with the outer or cover layer serving to conceal the inner or liner layer which may be closed upon itself to form hidden obstructions at selected locations in the maze which prevent passage of the solving piece. In this manner, concealed dead-end passages are provided whereby the player must rely on his sense of feel to solve the puzzle. The cover layer preferably is of a soft and supple cloth fabric that is pleasing in appearance and feel.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: June 23, 1987
    Assignee: Those Characters From Cleveland, Inc.
    Inventors: Ralph Shaffer, Susan Trentel
  • Patent number: D277122
    Type: Grant
    Filed: October 14, 1982
    Date of Patent: January 8, 1985
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D277123
    Type: Grant
    Filed: October 14, 1982
    Date of Patent: January 8, 1985
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D277125
    Type: Grant
    Filed: October 14, 1982
    Date of Patent: January 8, 1985
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D282945
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: March 11, 1986
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D282946
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: March 11, 1986
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D282947
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: March 11, 1986
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D282948
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: March 11, 1986
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D283526
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: April 22, 1986
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik
  • Patent number: D283527
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: April 22, 1986
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik
  • Patent number: D283528
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: April 22, 1986
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson
  • Patent number: D288579
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: March 3, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Nanette B. Hardiman, Cathy L. Veness, Andrea McSweeney
  • Patent number: D288580
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: March 3, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Nanette B. Hardiman
  • Patent number: D288584
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: March 3, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Nanette B. Hardiman, Cathy L. Veness, Andrea McSweeney
  • Patent number: D288585
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: March 3, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Nanette B. Hardiman
  • Patent number: D288704
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: March 10, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Nanette B. Hardiman
  • Patent number: D288705
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: March 10, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Nanette B. Hardiman, Cathy L. Veness, Andrea McSweeney
  • Patent number: D290980
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: July 21, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Michael J. Spindle
  • Patent number: D290981
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: July 21, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Michael J. Spindle
  • Patent number: D290982
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: July 21, 1987
    Assignee: American Greetings Corporation
    Inventors: Ralph Shaffer, William Davidson, Elena Kucharik, Michael J. Spindle