US2928870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur trifluorides of organic ethers
Assignee: EIDP Inc
•
Filing: 1958-08-19
•
Granted: 1960-03-15
•
Expires: 1978-08-19
Abstract
No abstract record available.
Inventors
- 👤 Hasck William Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:51
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/11; C; C07; C07C; C07C381/00; D21H17/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
PROCESS FOR THE PREPARATION OF COMPOUNDS OF THE FORMULA R-O-CF2-CF2-SF3 WHEREIN R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROCARBON AND HALOHYDROCARBON GROUPS FREE OF ALIPHATIC UNSATURATION AND IN WHICH THE CARBON BONDED TO THE ETHER OXYGEN IS OTHERWISE BONDED ONLY TO A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND CARBON WHICH COMPRISES RACTING SULFUR TETRAFLUORIDE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AND UNDER AN INERT ATMOSPHERE WITH AN ORGANIC ETHER HAVING AS ONE SUBSTITUENT ON THE ETHER OXYGEN A TRIFLUOROVINYL GROUP AND AS THE OTHER SUBSTITUENT ON THE ETHER OXYGEN A MEMBER OF THE GROUP CONSISTING OF HYDROCARBON AND HALOHYDROCARBON GROUPS FREE OF ALIPHATIC UNSATURATION AND IN WHICH ANY CARBON BONDED TO HALOGEN IS OTHERWISE BONDED ONLY TO A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND CARBON.
Claim 2
Dependent Claim
129 words
PROCESS FOR THE PREPARATION OF COMPOUNDS OF THE FORMULA R-O-CF2-CF2-SF3 WHEREIN R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROCARBON AND HALOHYDROCARBON GROUPS FREE OF ALIPHATIC UNSATURATION AND IN WHICH THE CARBON BONDED TO THE ETHER OXYGEN IS OTHERWISE BONDED ONLY TO A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND CARBON WHICH COMPRISES RACTING SULFUR TETRAFLUORIDE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AND UNDER AN INERT ATMOSPHERE WITH AN ORGANIC ETHER HAVING AS ONE SUBSTITUENT ON THE ETHER OXYGEN A TRIFLUOROVINYL GROUP AND AS THE OTHER SUBSTITUENT ON THE ETHER OXYGEN A MEMBER OF THE GROUP CONSISTING OF HYDROCARBON AND HALOHYDROCARBON GROUPS FREE OF ALIPHATIC UNSATURATION AND IN WHICH ANY CARBON BONDED TO HALOGEN IS OTHERWISE BONDED ONLY TO A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND CARBON.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |