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:
Mar. 10, 2009
Filed:
Mar. 04, 2003
Tyler J. Mckinley, West Linn, OR (US);
Matthew M. Weaver, Wilsonville, OR (US);
Tony F. Rodriguez, Portland, OR (US);
Ravi K. Sharma, Portland, OR (US);
Marc D. Miller, Corte Madera, CA (US);
Tyler J. McKinley, West Linn, OR (US);
Matthew M. Weaver, Wilsonville, OR (US);
Tony F. Rodriguez, Portland, OR (US);
Ravi K. Sharma, Portland, OR (US);
Marc D. Miller, Corte Madera, CA (US);
Digimarc Corporation, Beaverton, OR (US);
Abstract
A variety of systems responsive to watermarked documents are detailed. In one, watermarking is employed to facilitate system access. In another, security is provided through analyzing digitally watermarked documents. In yet another, a digital watermark-based combination lock is adapted to analyze a sequence (and perhaps an orientation) of presented digitally watermarked cards.