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. 15, 2013
Filed:
Aug. 26, 2009
Applicants:
Martin Walker, Cheshire, GB;
Anthony Jarvis, Cheshire, GB;
Inventors:
Martin Walker, Cheshire, GB;
Anthony Jarvis, Cheshire, GB;
Assignee:
Datalase Ltd., Cheshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A composition comprising i) a color forming component which is susceptible to changing color when irradiated; ii) an amine neutralised alkylaromatic sulphonic acid; and iii) a binder. Methods of marking a substrate comprising incorporating within or applying to a substrate the composition of this invention, and substrates coated with the composition, are also provided.