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. 23, 2021
Filed:
Feb. 05, 2016
Applicant:
Restrack As, Kjeller, NO;
Inventor:
Helge Stray, Kjeller, NO;
Assignee:
RESTRACK AS, Kjeller, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/58 (2006.01); E21B 47/11 (2012.01); C07C 65/21 (2006.01); G01N 30/72 (2006.01); G01N 30/86 (2006.01);
U.S. Cl.
CPC ...
C09K 8/58 (2013.01); C07C 65/21 (2013.01); E21B 47/11 (2020.05); G01N 30/72 (2013.01); G01N 30/8679 (2013.01);
Abstract
The invention provides for the use of at least one aromatic acid compound of formula i), or a salt thereof, as a water tracer; wherein n is 0, 1 or 2, Rto Rare each independently H, alkyl or alkoxy and wherein at least one of Rto Ris alkoxy. The invention further provides for a method of monitoring the flow of water within a structure having an inflow point and an outflow point, where the method comprises; a) introducing at least a one tracer of formula i) into said inflow point; b) collecting fluid at said outflow point; and c) measuring the presence and/or concentration of said tracer in said fluid collected at said outflow point over time.