US2774775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonyloxy steroids
Assignee: Pharmacia and Upjohn Co
•
Filing: 1954-01-26
•
Granted: 1956-12-18
•
Expires: 1974-01-26
Abstract
No abstract record available.
Inventors
- 👤 Korman Jerome
- 👤 John A Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:58
CPC Classifications
C; C07; C07J; C07J13/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
3-KETO -1,4,17(20)-PREGNATRIENE-21-CARBONYLOXY STEROID REPRESENTED BY THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
8 words
3-KETO -1,4,17(20)-PREGNATRIENE-21-CARBONYLOXY STEROID REPRESENTED BY THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2441560A
Cited
US2359773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |