US3733273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azeotropic composition of fluorocarbons
Assignee: Phillips Petroleum Co
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Filing: 1972-01-03
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Granted: 1973-05-15
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Expires: 1992-01-03
Abstract
Abstract AN AZEOTROPIC CMPOSITION IS FORMED BY 1,2-DICHLORO1,1,2,2-TETRAFLUOROETHANE AND 1-CHLORO-1,2,2,-TRIFLUOROETHANE.
Inventors
- 👤 B Munro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:35
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5045; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C10; C10M; C10M3/00; H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/24; C09K2205/00; C09K2205/32; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10N; C10N2040/00; C10N2040/08
Claims Analysis
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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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |