The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2001
Filed:
Mar. 24, 1997
Frank A. Tycksen, Jr., Beaverton, OR (US);
Charles W. Jennings, Portland, OR (US);
Preview Systems, Inc., Sunnyvale, CA (US);
Abstract
A digital certificate includes framing characters defining a protected area. The protected area contains a selected set of components, including text-based components and binary-based components, and the certificate serves as a transport container for such components. A message digest or hashing algorithm applied to the protected area provides consistent results despite modifications to the certificate outside the protected area. A digital signature provides authentication of source and content integrity. Digital certificates under the present invention may be applied to a variety of purposes including but not limited to proof of ownership, gift certificates, upgrade purchases, and other applications where verification of source and content integrity are desirable.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile