US2833810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
O-alkyltyrosine esters
Assignee: Wyeth Holdings LLC
•
Filing: 1956-03-05
•
Granted: 1958-05-06
•
Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Kissman Henry Marcell
- 👤 Joseph Joseph Peter
- 👤 Baker Bernard Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:04
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF O-ALKYL-L-TYROSINE ESTERS OF THE FORMULA:
Claim 2
Dependent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF O-ALKYL-L-TYROSINE ESTERS OF THE FORMULA:
References Cited (Backward Citations)
US2680762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |