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:
May. 05, 2015
Filed:
Nov. 06, 2003
Applicants:
Anita Barthram, Berkshire, GB;
Matthew Charles Sugdon, Hampshire, GB;
Inventors:
Anita Barthram, Berkshire, GB;
Matthew Charles Sugdon, Hampshire, GB;
Assignee:
De la Rue International Limited, Basingstoke, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41F 33/00 (2006.01); B41F 31/00 (2006.01); B41M 3/14 (2006.01);
U.S. Cl.
CPC ...
B41M 3/144 (2013.01);
Abstract
A security device comprises two or more regions (). Each region () contains a material or combination of materials wherein the two or more regions exhibit substantially the same visible appearance under first viewing conditions and different visible appearances under second viewing conditions, the second viewing conditions. The second viewing conditions comprise a combination of a) visible light and b) substantially any UV wavelength.