US3332881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azeotropic composition
Assignee: EIDP Inc
•
Filing: 1964-12-21
•
Granted: 1967-07-25
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Burt James Gordon
- 👤 Kvalnes Donovan Erb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:35
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C19/10; C07C19/12; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5045; C23; C23C; C23C22/00; C23C22/02; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
AN AXEOTROPIC-LIKE COMPOSITION CONSISTING ESSENTIALLY OF FROM 60% TO 90% BY WEIGH OF TRICHLOROFLUOROMETHANE AND 40% TO 10% BY WEIGHT OF 1,1-DICHLORO-2,2, 2-TRIFLUOROETHANE.
Claim 2
Dependent Claim
23 words
AN AXEOTROPIC-LIKE COMPOSITION CONSISTING ESSENTIALLY OF FROM 60% TO 90% BY WEIGH OF TRICHLOROFLUOROMETHANE AND 40% TO 10% BY WEIGHT OF 1,1-DICHLORO-2,2, 2-TRIFLUOROETHANE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |