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:
Jan. 31, 2006
Filed:
Dec. 20, 1999
Applicants:
David L. Hecht, Palo Alto, CA (US);
John Lennon, Newark, CA (US);
Ralph Merkle, Sunnyvale, CA (US);
Inventors:
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); G06K 7/10 (2006.01); G06K 19/06 (2006.01); G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A record and related method is provided for storing encoded information comprising a storage media, first marks on the storage media having a covert code characteristic, with the first marks conveying a covertly marked code and second marks preferably having an overt code characteristic which convey a second overtly marked code useful in decoding the covertly marked code.