US2748145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chalcogenous compolexes
Assignee: EIDP Inc
•
Filing: 1953-07-27
•
Granted: 1956-05-29
•
Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Earl L Muetterties
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:25
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
AN ADDITION COMPLEX OF PHOSPHORUS PENTAFLUORIDE WITH AN ORGANIC LEWIS BASE HAVING A DONOR ATOM WHICH IS A BIVALENT CHALCOGEN OF ATOMIC WEIGHT LESS THAN 33 WHICH CHALOGEN HAS EACH OF ITS VALENCES BONDED TO CARBON, SAID PHOSPHORUS PENTAFLUORIDE AND LEWIS BASE BEING PRESENT IN SAID COMPLEX IN A MOLAR RATIO OF POSITIVE INTEGERS UP TO 1 MOLE OF THE PENTAFLUORIDE FOR EACH SAID DONOR ATOM IN ONE MOLECULE OF THE LEWIS BASE.
Claim 2
Dependent Claim
73 words
AN ADDITION COMPLEX OF PHOSPHORUS PENTAFLUORIDE WITH AN ORGANIC LEWIS BASE HAVING A DONOR ATOM WHICH IS A BIVALENT CHALCOGEN OF ATOMIC WEIGHT LESS THAN 33 WHICH CHALOGEN HAS EACH OF ITS VALENCES BONDED TO CARBON, SAID PHOSPHORUS PENTAFLUORIDE AND LEWIS BASE BEING PRESENT IN SAID COMPLEX IN A MOLAR RATIO OF POSITIVE INTEGERS UP TO 1 MOLE OF THE PENTAFLUORIDE FOR EACH SAID DONOR ATOM IN ONE MOLECULE OF THE LEWIS BASE.
Claim 3
Dependent Claim
9 words
AN ADDITION COMPLEX OF PHOSPHORUS PENTAFLUORIDE WITH TETRAMETHYLENE SULFIDE.
Claim 4
Dependent Claim
9 words
AN ADDITION COMPLEX OF PHOSPHORUS PENTAFLUORIDE WITH TETRAMETHYLENE SULFIDE.
References Cited (Backward Citations)
GB486563A
Cited
US2435412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |