Refrigerant

Details Refrigerant Refrigerant

2010-12-14

2011-10-04

Hardee, John (Department: 1761)

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

Reexamination Certificate

active

08029691

ABSTRACT:
A refrigerant that is azeotropic or near-azeotropic comprises a binary blend of R744 and R41. In one embodiment the binary blend has a molar composition of 20 to 60 percent R744, the remainder being R41.

REFERENCES:
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patent: 6001273 (1999-12-01), Bivens et al.
patent: 2003/0199408 (2003-10-01), Minor et al.
patent: 2004/0014621 (2004-01-01), Minor et al.
patent: 2005/0178998 (2005-08-01), Felix et al.
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patent: WO 97/07182 (1997-02-01), None
patent: 9924358 (1999-05-01), None
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English Language abstract for CN1560174 (retrieved from http://ep.espacenet.com on Aug. 11, 2010).
European Patent Office, PCT Application No. GB2007/001882 International Search Report (parent PCT application) (Apr. 10, 2008).
European Patent Office, PCT Application No. GB2007/001882 Written Opinion (parent PCT application) (Apr. 10, 2008).

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