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:
Nov. 18, 2014
Filed:
Dec. 06, 2006
Michael Sögtrop, Poing, DE;
Michael Sögtrop, Poing, DE;
LSI Corporation, Milpitas, CA (US);
Abstract
A document archiving and retrieval system enables third parties to verify that an electronic document had been archived on a particular date and time. For each document to be archived, a hash function generates a digital fingerprint of the document, and inserts it into a hash list file, together with an indicator of the location of the file in the archive. The hash list file is submitted to an electronic time stamping authority to obtain a corresponding digital time stamp. Upon request, authentication of the hash list file with the digital time stamp, and verification that the current hash of the file matches that in the hash list file proves that the document was archived on the date indicated by the digital time stamp, and had not subsequently been altered.