US4948526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azeotrope-like compositions of pentafluorodimethyl ether and monochlorodifluoromethane
Assignee: Honeywell International Inc
•
Filing: 1989-09-26
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Granted: 1990-08-14
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Expires: 2009-09-26
Abstract
Abstract Azeotrope-like compositions of penetafluorodimethyl ether and monochlorodifluoromethane useful for heating and cooling applications.
Inventors
- 👤 Barbara R. Fellows
- 👤 Earl A. E. Lund
- 👤 Ian R. Shankland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:46
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5063; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C09K2205/00; C09K2205/10; C09K2205/11; C09K2205/112; C09K2205/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
40 words
Azeotrope-like compositions consisting essentially of from about 5.0 to about 50.0 weight percent of pentafluorodimethyl ether and from about 95.0 weight percent to about 50.0 weight percent monochlorodifluoromethane which have a vapor pressure of about 73.8 psia at 32° F.
Claim 2
Dependent Claim
40 words
Azeotrope-like compositions consisting essentially of from about 5.0 to about 50.0 weight percent of pentafluorodimethyl ether and from about 95.0 weight percent to about 50.0 weight percent monochlorodifluoromethane which have a vapor pressure of about 73.8 psia at 32° F.
Claim 3
Dependent Claim
33 words
The azeotrope-like compositions of claim 1 consisting essentially of from about 20 weight percent to about 40.0 weight percent pentafluorodimethyl ether and from about 80.0 weight percent to about 60.0 weight percent monochlorodifluoromethane.
Claim 4
Dependent Claim
21 words
The azeotrope-like compositions of claim 1 consisting essentially of about 28.9 weight percent pentafluorodimethyl ether and about 71.1 weight percent monochlorodifluoromethane.
Claim 5
Dependent Claim
22 words
Azeotrope-like compositions of claim 1 wherein said compositions have a vapor pressure of about 73.8 ± about 3 psia at 32° F.
Claim 6
Dependent Claim
27 words
A method for producing refrigeration which comprises condensing a composition of claim 1 and thereafter evaporating said composition in the vicinity of a body to be cooled.
Claim 7
Dependent Claim
27 words
A method for producing heating which comprises condensing a composition of claim 1 in the vicinity of a body to be heated and thereafter evaporating said composition.
Claim 8
Dependent Claim
28 words
A method for producing refrigeration which comprises condensing a composition of claim 3 and thereafter evaporating the said composition in the vicinity of the body to be cooled.
Claim 9
Dependent Claim
27 words
A method for producing heating which comprises condensing a composition of claim 3 in the vicinity of a body to be heated and thereafter evaporating said composition.
Claim 10
Dependent Claim
27 words
A method for producing refrigeration which comprises condensing a composition of claim 5 and thereafter evaporating said composition in the vicinity of a body to be cooled.
Claim 11
Dependent Claim
27 words
A method for producing heating which comprises condensing a composition of claim 5 in the vicinity of a body to be heated and thereafter evaporating said composition.
Claim 12
Dependent Claim
27 words
A method for producing refrigeration which comprises condensing a composition of claim 7 and thereafter evaporating said composition in the vicinity of a body to be cooled.
Claim 13
Dependent Claim
27 words
A method for producing heating which comprises condensing a composition of claim 7 in the vicinity of a body to be heated and thereafter evaporating said composition.
References Cited (Backward Citations)
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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) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |