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:
Sep. 01, 2015
Filed:
Jan. 31, 2013
Thomas D. Pawlik, Rochester, NY (US);
Judith A. Bose, Webster, NY (US);
Ronald S. Cok, Rochester, NY (US);
Nelson A. Blish, Rochester, NY (US);
Thomas D. Pawlik, Rochester, NY (US);
Judith A. Bose, Webster, NY (US);
Ronald S. Cok, Rochester, NY (US);
Nelson A. Blish, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method for authenticating an object that includes providing a label () with invisible indicia () printed with optically active material on a reflective substrate; providing a device that has a digital camera () having a light source (), an image sensor (), a first polarizing filter () having a first orientation, and a second polarizing filter () having a second orientation; illuminating the label with the light from the light source through the first polarizing filter; forming an image with the image sensor using reflected light from the label wherein the reflected light passes through the second polarizing filter prior to reaching the sensor; wherein the second polarizing filter makes the invisible indicia visible; and authenticating the object.