ALL: FYI on TESTDRIVE Patent
Court Case-
E-Data Corp v. Micropatent Corp, et al Filed: 03/25/96
TEST DRIVE CORP
is listed as a defendant
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First page abstract of TESTDRIVE patent only one with TESTDRIVE as assignee
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United States Patent
Patent Number: US5341429
Stringer; John W., et. al.
Date of Patent: Aug. 23, 1994
TRANSFORMATION OF EPHEMERAL MATERIAL
Inventors:
Stringer; John W. (Santa Cruz, CA)
Richards; Theodore S. (Los Gatos, CA)
Assignee:
TestDrive Corporation (Santa Clara, CA; Assignee type: U.S. Company or Corporation)
Appl. Number: 92US-986105
Filed: Dec. 4, 1992
Int. Cl.-5
5-H04K-001-0000
U.S. Cl.
380023000, 380004000, 380025000
Field of Search
380003000, 380004000, 380023000, 380024000, 380025000, 380049000, 380050000
References Cited
U.S. PATENT DOCUMENTS
US4646234 2/1987 Tolman et al................380004000
US4658055 8/1987 Thomas......................380004000
US4658093 4/1987 Hellman.....................380025000
US4740890 4/1988 Willaim.....................380004000
US4888798 12/1989 Earnest.....................380004000
US5014234 5/1991 Edwards, Jr.................380004000
Primary Examiner - Swann; Tod R.
Attorney, Agent, or Firm - Glenn; Michael A.
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.
20 Claims, 5 Drawing Figures
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