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:
Oct. 16, 2012
Filed:
Jan. 29, 2007
Applicants:
Steven J. Simske, Fort Collins, CO (US);
Henry Sang, Cupertino, CA (US);
Philippe Mucher, Maastricht, NL;
Inventors:
Steven J. Simske, Fort Collins, CO (US);
Henry Sang, Cupertino, CA (US);
Philippe Mucher, Maastricht, NL;
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/40 (2006.01); G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A variable guilloche includes at least two guilloche curves, printed in a common space and having at least one point of overlap. The at least two curves are plotted from equations having variables corresponding to a specified data string of steganographic information.