Patents by Inventor Theodore S. Richards

Theodore S. Richards 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).

  • Transformation of ephemeral material
    Patent number: 5341429
    Abstract: A bidirectional process allows remote transformation of ephemeral materials between an original form and a denatured form without changing the content of the material from its original form and without restricting the resolution, functionality, and/or utility of the original material in the denatured form. The denatured material provides both a limited use form, which allows temporary full function evaluation of the material; and an enabled form, which allows unrestricted full function use of the material. A security system supervises conversion of the denatured material from the limited use form to the enabled form.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: August 23, 1994
    Assignee: TestDrive Corporation
    Inventors: John W. Stringer, Theodore S. Richards