US3607755A
Expired / Lapsed
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Novel halocarbon compositions
Assignee: Honeywell International Inc
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Filing: 1968-11-25
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Granted: 1971-09-21
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Expires: 1988-11-25
Abstract
Abstract Dichlorodifluoromethane (CC12F2) and 1,1,1,2-tetrafluoroethane (CF3CH2F), in certain proportions, form an azeotrope and essentially azeotropic mixtures, which are constant boiling, or essentially constant boiling, and which mixtures possess refrigeration capacities higher than either of the CC12F2 and CF3CH2F components alone. These mixtures are especially adapted for use in systems having high-condensing temperatures such as automobile air conditioning systems.
Inventors
- 👤 Kevin Paul Murphy
- 👤 Richard Frederick Harry Stahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:23
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
21 words
Mixtures according to claim 1 in which the mol percent of CF3CH2F is in the range of about 33 to 64.
Claim 2
Dependent Claim
21 words
Mixtures according to claim 1 in which the mol percent of CF3CH2F is in the range of about 39 to 47.
Claim 3
Dependent Claim
15 words
Mixtures according to claim 1 in which the mol percent of CF3CH2F is about 47.
Claim 4
Dependent Claim
29 words
The process of producing refrigeration which comprises condensing a mixture as defined in claim 1 and thereafter evaporating said mixture in the vicinity of a body to be cooled.
Claim 5
Dependent Claim
16 words
The process according to claim 5 in which the mixture is as defined in claim 3.
Claim 6
Dependent Claim
16 words
The process according to claim 5 in which the mixture is as defined in claim 4.
Claim 7
Dependent Claim
16 words
The process according to claim 5 in which the mixture is as defined in claim 4.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |