US2922816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
US2922816A - - Google Patents
Assignee: —
•
Filing: —
•
Granted: 1960-01-26
•
Expires: 1977-01-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:53
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
PROCESS FOR THE PREPARATION OF TRIFLUOROACETYL FLUORIDE WHICH COMPRISES CONTACTING A MIXTURE OF TETRAFLUOROETHYLENE AND OXYGEN AT A TEMPERATURE OF 140* TO 225*C WITH A CATALYST OF THE CLASS CONSISTING OF CARBON AND SILVER OXIDE, AND RECOVERING TRIFUOROACETYL FLUORIDE.
Claim 2
Dependent Claim
39 words
PROCESS FOR THE PREPARATION OF TRIFLUOROACETYL FLUORIDE WHICH COMPRISES CONTACTING A MIXTURE OF TETRAFLUOROETHYLENE AND OXYGEN AT A TEMPERATURE OF 140* TO 225*C WITH A CATALYST OF THE CLASS CONSISTING OF CARBON AND SILVER OXIDE, AND RECOVERING TRIFUOROACETYL FLUORIDE.
References Cited (Backward Citations)
US2717871A
Cited
US2676983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |