US2602804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and compounds useful in the production of 17-hydroxysteroids
Assignee: Research Corp
•
Filing: 1951-01-25
•
Granted: 1952-07-08
•
Expires: 1971-01-25
Abstract
No abstract record available.
Inventors
- 👤 Edward C Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:24
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
3(A),21-DIACETOXY - 11,20 - DIKETO-12(A), 15,21-TRIBROMO-$16-PREGNENE.
Claim 2
Dependent Claim
6 words
3(A),21-DIACETOXY - 11,20 - DIKETO-12(A), 15,21-TRIBROMO-$16-PREGNENE.
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |