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:
Apr. 18, 2017
Filed:
May. 09, 2012
Applicants:
Duncan Mccallien, County Durham, GB;
Vincent Brian Croud, South Yorkshire, GB;
Inventors:
Duncan McCallien, County Durham, GB;
Vincent Brian Croud, South Yorkshire, GB;
Assignee:
JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 37/00 (2006.01); G01N 33/28 (2006.01); C10L 1/00 (2006.01); C10L 1/226 (2006.01);
U.S. Cl.
CPC ...
G01N 33/2882 (2013.01); C10L 1/003 (2013.01); C10L 1/226 (2013.01); Y10T 436/13 (2015.01);
Abstract
A method of marking a hydrocarbon liquid includes the step of adding to the liquid, as a tracer compound, a compound of Formula I:wherein at least one of R-Ris selected from: