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:
Sep. 01, 1998
Filed:
Jul. 25, 1996
Applicant:
Inventors:
David P Wilson, East Amherst, NY (US);
Rajiv R Singh, Getzville, NY (US);
Rajat S Basu, East Amherst, NY (US);
Ellen L Swan, Lancaster, NY (US);
David Nalewajek, West Senaca, NY (US);
Assignee:
Electric Power Research, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252 67 ; 62 86 ; 62114 ; 252 69 ; 252305 ; 252364 ; 432-1 ; 432 13 ; 521 98 ; 521131 ; 521155 ; 521902 ; 521910 ; 585-1 ; 585-2 ;
Abstract
The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: C.sub.x F.sub.y H.sub.z, wherein x is 3, 4, 5, or 6 and y and z are each independently 1 or a positive whole number such that the result of y/(y+z) is greater than 0.67.