US3225103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-phosphorinanone-1-sulfides
Assignee: Wyeth Holdings LLC
•
Filing: 1961-12-22
•
Granted: 1965-12-21
•
Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Welcher Richard Parke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:59
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6568; C07F9/65683; C07F9/65685; C07F9/65688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A 4-PHOSPHORINANONE-1-SULFIDE OF THE FORMULA
Claim 2
Dependent Claim
5 words
A 4-PHOSPHORINANONE-1-SULFIDE OF THE FORMULA
References Cited (Backward Citations)
US2903482A
Cited
US2898375A
Cited
US2875249A
Cited
US2975213A
Cited
US2959615A
Cited
US2855435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |