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:
Jun. 16, 2009
Filed:
Mar. 10, 2005
Blair Brewster Dillaway, Clyde Hill, WA (US);
Brian Lamacchia, Seattle, WA (US);
John Manferdelli, Redmond, WA (US);
Muthukrishnan Paramasivam, Seattle, WA (US);
Blair Brewster Dillaway, Clyde Hill, WA (US);
Brian LaMacchia, Seattle, WA (US);
John Manferdelli, Redmond, WA (US);
Muthukrishnan Paramasivam, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A digital certificate is employed to produce a digital signature for a digital construct. In the digital certificate is set forth a certificate validity period defining for the digital certificate a time period during which the digital certificate is to be honored as valid for producing digital signatures, and a signature validity period defining for each digital signature produced based on the digital certificate a time period during which the digital signature is to be honored as valid.