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:
Jul. 23, 1996
Filed:
Jun. 29, 1994
Applicant:
Inventor:
Sylvie Macaudiere, Asnieres, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252 67 ; 62114 ; 252364 ; 264 53 ; 264D / ; 510412 ; 510433 ;
Abstract
In order to replace the chlorodifluoromethane in air conditioning systems, the invention proposes the use, as refrigerant fluid, of a mixture containing by mass from 26 to 34% of difluoromethane, from 56 to 73% of 1,1,1,2-tetrafluoroethane and from 1 to 10% of tetrafluoromethane or octafluoropropane.
Macaudiere, Sylvie. (1996). Nonazeotropic mixtures containing difluoromethane and (U.S. Patent No. 5538660). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5538660
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