US3113973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organophosphorus oxides and method of preparing them
Assignee: Wyeth Holdings LLC
•
Filing: 1960-08-24
•
Granted: 1963-12-10
•
Expires: 1980-08-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Hoffmann
- 👤 Henderson Audrey Tesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/53; C07F9/5325; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
A NOVEL METHOD OF PREPARING PHOSPHINE OXIDE DERIVATIVES IN WHICH A TERTIARY AROMATIC PHOSPHINE OXIDE CONFORMING TO THE FORMULA
Claim 2
Dependent Claim
19 words
A NOVEL METHOD OF PREPARING PHOSPHINE OXIDE DERIVATIVES IN WHICH A TERTIARY AROMATIC PHOSPHINE OXIDE CONFORMING TO THE FORMULA
Claim 3
Dependent Claim
6 words
AN ORGANOPHOSPHORUS COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
6 words
AN ORGANOPHOSPHORUS COMPOUND HAVING THE FORMULA
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) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |