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, 2018
Filed:
Jul. 25, 2016
Applicant:
Joshua Noel Hogan, Los Altos, CA (US);
Inventor:
Joshua Noel Hogan, Los Altos, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); G01N 21/47 (2006.01); G07D 7/12 (2016.01); B42D 25/425 (2014.01); B42D 25/36 (2014.01); B42D 25/47 (2014.01);
U.S. Cl.
CPC ...
G06K 9/00442 (2013.01); B42D 25/36 (2014.10); B42D 25/425 (2014.10); B42D 25/47 (2014.10); G01N 21/47 (2013.01); G07D 7/12 (2013.01);
Abstract
The invention provides a system and method for secure document verification. In the preferred embodiment, embedded information consists of marks embedded in the interior of the document and are comprised of regions that have refractive index modified to carry information. In the preferred embodiment the marks are not discernable by conventional imaging, spectroscopic or optical polarization techniques, but are discernably by interferometric techniques, such as optical coherence tomography. Multiple alternate embodiments are taught.