US3086053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphines
Assignee: American Potash and Chemical Corp
•
Filing: 1957-11-08
•
Granted: 1963-04-16
•
Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 Ross I Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:27
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6568; C07F9/65683
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A METHOD OF PRODUCING A HETEROCYCLIC PHOSPHINE CONTAINING THE PHOSPHORUS ATOM WITHIN SAID HETEROCYCLIC RING COMPRISING: CONTAINING AN ALKALI METAL SALT OF A PHOSPHINE HAVING THE FORMULA MPHR WHEREIN M IS AN ALKALI METAL AND R IS SELECTED FROM THE GROUP CONSISTING OF H, ALKYL, PHENYL, LOWER ALKYL-SUBSTITUTED PHENYL, BENZYL AND HALO-SUBSTITUTED PHENYL RADICALS WITH AN ALKYL DIHALIDE OF THE FORMULA (CH2)NX2 WHERE X IS A HALOGEN AND N IS AN INTEGER FROM FOUR TO SEVEN.
Claim 2
Independent Claim
76 words
A METHOD OF PRODUCING A HETEROCYCLIC PHOSPHINE CONTAINING THE PHOSPHORUS ATOM WITHIN SAID HETEROCYCLIC RING COMPRISING: CONTAINING AN ALKALI METAL SALT OF A PHOSPHINE HAVING THE FORMULA MPHR WHEREIN M IS AN ALKALI METAL AND R IS SELECTED FROM THE GROUP CONSISTING OF H, ALKYL, PHENYL, LOWER ALKYL-SUBSTITUTED PHENYL, BENZYL AND HALO-SUBSTITUTED PHENYL RADICALS WITH AN ALKYL DIHALIDE OF THE FORMULA (CH2)NX2 WHERE X IS A HALOGEN AND N IS AN INTEGER FROM FOUR TO SEVEN.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |