US2852511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9alpha-halo steroids of the pregnane series and process therefor
Assignee: Olin Corp
•
Filing: 1954-03-10
•
Granted: 1958-09-16
•
Expires: 1974-03-10
Abstract
No abstract record available.
Inventors
- 👤 Fried Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:22
CPC Classifications
C; C07; C07J; C07J31/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
21 words
A STEROID OF THE PREGNANE SERIES HAVING A 9A-HALOGEN SUBSTITUENT AND A 11-SUBSTITUENT OF THE GROUP CONSISTING OF KETO AND B-HYDROXY.
Claim 2
Dependent Claim
21 words
A STEROID OF THE PREGNANE SERIES HAVING A 9A-HALOGEN SUBSTITUENT AND A 11-SUBSTITUENT OF THE GROUP CONSISTING OF KETO AND B-HYDROXY.
Claim 3
Dependent Claim
7 words
A 9B,11B-OXIDO STEROID OF THE PREGNANE SERIES.
Claim 4
Dependent Claim
7 words
A 9B,11B-OXIDO STEROID OF THE PREGNANE SERIES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |