	US 11,959,831 B1
	Leak detection formula, analyze and methods of use
Bernie C. Thompson, Tijeras, NM (US); Steven G. Thoma, Albuquerque, NM (US); and Kenneth D. Ley, Sandia Park, NM (US)
Assigned to Automotive Test Solutions, Inc., Albuquerque, NM (US)
Filed by Bernie C. Thompson, Tijeras, NM (US); Steven G. Thoma, Albuquerque, NM (US); and Kenneth D. Ley, Sandia Park, NM (US)
Filed on Nov. 2, 2018, as Appl. No. 16/179,085.
Application 16/179,085 is a division of application No. 13/789,319, filed on Mar. 7, 2013, granted, now 10,222,291.
Application 13/789,319 is a continuation in part of application No. 13/789,179, filed on Mar. 7, 2013, granted, now 9,390,565, issued on Jul. 12, 2016.
Claims priority of provisional application 61/759,782, filed on Feb. 1, 2013.
Int. Cl. G01M 3/22 (2006.01); G01M 3/04 (2006.01)

CPC G01M 3/226 (2013.01) [G01M 3/042 (2013.01)]

5 Claims

1. A composition of matter for identifying the location of a leak site in a sealed system defined by one or more external surfaces by detecting CO₂gas escaping from such leak site, the CO₂pressurized to a pressure in excess of the pressure surrounding the sealed system, the composition of matter having the following properties: it foams or is in the form of a foam when applied to the one or more external surfaces (herein “foam”); adheres to the one or more external surfaces; and includes water and an indicator which, in the presence of pressurized CO₂escaping from the leak site and reacting with the water, visually changes the color of the foam over the leak site to identify the location of the leak site.