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. 01, 2016
Filed:
Aug. 24, 2009
Applicants:
David P. Luther, Duncanville, TX (US);
Winthrop D. Childers, San Diego, CA (US);
Inventors:
David P. Luther, Duncanville, TX (US);
Winthrop D. Childers, San Diego, CA (US);
Assignee:
Precision Dynamics Corporation, Valencia, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2014.01); C09K 11/06 (2006.01); G03H 1/00 (2006.01); B42D 15/00 (2006.01); D21H 21/46 (2006.01); G03G 7/00 (2006.01); G09F 3/00 (2006.01);
U.S. Cl.
CPC ...
G09F 3/00 (2013.01); G09F 3/005 (2013.01); Y10T 428/24835 (2015.01);
Abstract
An identification medium is optimized for displaying visible and excitable indicia. The medium includes a substrate having a color change layer, such as a direct thermal layer, and a patterned excitable layer placed over the color change layer. The color change layer produces the visible indicia. The excitable layer produces the excitable indicia. The excitable indicia is not easily readable under ambient light but becomes more easily readable under directed radiation, i.e., UV or IR light.