US4054036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant boiling mixtures of 1,1,2-trichlorotrifluoroethane and cis-1,1,2,2-tetrafluorocyclobutane
Assignee: Honeywell International Inc
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Filing: 1976-12-21
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Granted: 1977-10-18
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Expires: 1996-12-21
Abstract
Abstract Constant boiling mixtures of 1,1,2-trichlorotrifluoroethane and cis-1,1,2,2-tetrafluorocyclobutane are useful as refrigerants, heat transfer media, gaseous dielectrics, expansion agents, aerosol propellants, working fluids in a power cycle and solvents.
Inventors
- 👤 Kevin P. Murphy
- 👤 Richard F. Stahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:42
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/30; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; F; F01; F01K; F01K25/00; F01K25/08; C09K2205/00; C09K2205/10; C09K2205/12; C09K2205/122; C09K2205/124; C09K2205/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
18 words
Constant boiling mixtures consisting essentially of about 73.0 weight % 1,1,2-trichlorotrifluoroethane and about 27.0 weight % of cis-1,1,2,2-tetrafluorocyclobutane.
Claim 2
Dependent Claim
18 words
Constant boiling mixtures consisting essentially of about 73.0 weight % 1,1,2-trichlorotrifluoroethane and about 27.0 weight % of cis-1,1,2,2-tetrafluorocyclobutane.
Claim 3
Dependent Claim
16 words
Constant boiling mixtures according to claim 1 which boil at about 43.0° C. at 760 mm.
Claim 4
Dependent Claim
31 words
The process of producing refrigeration which comprises condensing a constant boiling mixture as described in claim 1 and thereafter evaporating said mixture in the vicinity of a body to be cooled.
Claim 5
Dependent Claim
24 words
The process of producing refrigeration according to claim 3 in which the constant boiling mixture condensed and evaporated is as defined in claim 2.
References Cited (Backward Citations)
US3578597A
Cited
US3850759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |