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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.:

US 5221493 B1

PDFFull Text
Date of Patent:
Jun. 22, 1993

Filed:

Oct. 18, 1991

Azeotropic compositions of 1,1,2,2,3,3,4,4-octafluorobutane and alcohols

Applicant:
Inventors:

Abid N Merchant, Wilmington, DE (US);

Allen C Sievert, Elkton, MD (US);

Akimichi Yokozeki, Wilmington, DE (US);

Janet C Sung, Wilmington, DE (US);

Assignee:

E. I. Du Pont de Nemours and Company, Wilmington, DE (US);

Attorney:

Walker; P. Michael

Primary Examiner:

Linda Skaling

Int. Cl.
CPC ...
C09K / ; C11D / ; C11D / ; C23G / ;
U.S. Cl.
CPC ...
252 67 ; 60651 ; 62114 ; 134 12 ; 134 31 ; 134 38 ; 134 40 ; 174 / ; 174 / ; 252-8 ; 252162 ; 252170 ; 252171 ; 252194 ; 252305 ; 252364 ; 252571 ; 252D / ; 264 53 ; 264D / ; 521 98 ; 521131 ;
Abstract

Azeotropic mixtures of HFC-338pcc and an alcohol such as methanol, ethanol, isopropanol or N-propanol, or a ketone such as acetone, are disclosed that are useful as cleaning agents, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, and displacement drying agents.

Find Patent Forward Citations

Merchant, Abid. (1993). Azeotropic compositions of 1,1,2,2,3,3,4,4-octafluorobutane and alcohols (U.S. Patent No. 5221493). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5221493

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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