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:
Aug. 31, 1993
Filed:
Mar. 12, 1990
Applicant:
Inventor:
Abid N Merchant, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
252171 ; 62114 ; 134 12 ; 134 38 ; 134 39 ; 134 40 ; 203 67 ; 252162 ; 252170 ; 252172 ; 252305 ; 252 67 ; 252 69 ; 252364 ; 252D / ; 521 98 ; 521131 ;
Abstract
Azeotropic mixtures of 1,1-dichloro-1,2-difluoroethane (HCFC-132c) and cis-1,2-dichloroethylene (c-HCC-1130) with methanol, or ethanol or n-propanol are useful in solvent cleaning applications, as refrigerants, aerosol propellants and blowing agents.