Stuart C Bricker

US Patent:

8562853, Oct 22, 2013

Filed:

Nov 19, 2009

Appl. No.:

12/621659

Inventors:

Thomas J. Leck - Hockessin DE, US
Stuart C. Bricker - Wilmington DE, US
Allen Capron Sievert - Elkton MD, US

Assignee:

E I du Pont de Nemours and Company - Wilmington DE

International Classification:

C09K 5/00
C09K 5/04

US Classification:

252 67

Abstract:

The present invention relates to the field of compression refrigeration and air conditioning. Specifically, the present invention relates to a tracer-containing compositions comprising refrigeration/heating fluid and tracer compound(s). Additionally, the present invention relates to a method for detecting tracer compounds to identify gases after leaving the custody of the original manufacturer or prior source, and the verification of authenticity. The aforementioned method provides for the detection of tracer compounds, which in turn, may alert the refrigeration industry to when dilution, adulteration, contamination or other unauthorized practices have occurred with refrigeration products.

US Patent:

20050230657, Oct 20, 2005

Filed:

Feb 18, 2005

Appl. No.:

11/062044

Inventors:

Thomas Leck - Hockessin DE, US
Stuart Bricker - Wilmington DE, US
Allen Sievert - Elkton MD, US

International Classification:

C09K005/00

US Classification:

252067000

Abstract:

The present invention relates to the field of compression refrigeration and air conditioning. Specifically, the present invention relates to a tracer-containing compositions comprising refrigeration/heating fluid and tracer compound(s). Additionally, the present invention relates to a method for detecting tracer compounds to identify gases after leaving the custody of the original manufacturer or prior source, and the verification of authenticity. The aforementioned method provides for the detection of tracer compounds, which in turn, may alert the refrigeration industry to when dilution, adulteration, contamination or other unauthorized practices have occurred with refrigeration products.