Patent US5194169A successfully refreshed from Google Patents.
US5194169A
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Azeotrope-like refrigerant mixtures of 1,1-dichloro-2,2,2-trifluoroethane and 1,1-dichloro-1-fluoroethane
Assignee: EIDP Inc
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Filing: 1991-03-04
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Granted: 1993-03-16
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Expires: 2011-03-04
Abstract
Abstract Azeotrope-like mixtures of 1,1-dichloro-2,2,2-trifluoroethane and 1,1-dichloro-1-fluoroethane, being useful as cleaning solvents, refrigerants and foam blowing agents.
Inventors
- 👤 Vinci M. Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:53
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/144; C07; C07C; C07C19/00; C07C19/08; C09; C09K; C09K3/00; C09K3/30; C09K5/00; C09K5/02; C09K5/04; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5045; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02825; C23G5/02829; C08J2361/00; C08J2361/04; C08J2361/06; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S264/00; Y10S264/05
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
25 words
A process for heating or cooling comprising the use of an azeotrope-like composition consisting essentially of effective amounts of 1,1-dichloro-2,2,2-trifluoroethane and 1,1-dichloro-1-fluoroethane as a refrigerant.
Claim 2
Dependent Claim
25 words
A process for heating or cooling comprising the use of an azeotrope-like composition consisting essentially of effective amounts of 1,1-dichloro-2,2,2-trifluoroethane and 1,1-dichloro-1-fluoroethane as a refrigerant.
Claim 3
Dependent Claim
33 words
The process of claim 1 wherein the azeotrope-like composition is about 80-20 weight percent 1,1-dichloro-2,2,2-trifluoroethane and about 20-80 weight percent 1,1-dichloro-1-fluoroethane having a boiling point of about 31.5° C. at substantially atmospheric pressure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-15 | 1996-09-14 | 1997-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-15 | 2000-09-14 | 2001-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-15 | 2004-09-14 | 2005-03-16 | $7700.00 | Window Closed / Lapsed |