US2813859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclics
Assignee: Pharmacia and Upjohn Co
•
Filing: 1954-12-17
•
Granted: 1957-11-19
•
Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Korman Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:00
CPC Classifications
C; C07; C07J; C07J71/00; C07J71/0073; C07J71/0094; C07J43/00; C07J43/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
LOWER-ALKYL 2-AMINOTHIAZOLO-(4'',5''-J)-11-KETO-2,4, 17(20)-PREGNATRIENE-21-OATE.
Claim 2
Dependent Claim
3 words
LOWER-ALKYL 2-AMINOTHIAZOLO-(4'',5''-J)-11-KETO-2,4, 17(20)-PREGNATRIENE-21-OATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |