US3050518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-cyano and 5-carbamyl steroid derivatives
Assignee: Roche Palo Alto LLC
•
Filing: 1959-07-17
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Granted: 1962-08-21
•
Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 Bowers Albert
- 👤 Howard J Ringold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:13
CPC Classifications
C; C07; C07J; C07J41/00; C07J75/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
A PROCESS FOR PREPARING 5-CYANO AND 5-CARBAMYL ANALOGS OF CERTAIN 4,5 DIHYDRO DERIVATIVES OF STEROIDAL $4-3-KETO-HORMONES, COMPRISING THE STEPS OF REACTING A STARTING COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
28 words
A PROCESS FOR PREPARING 5-CYANO AND 5-CARBAMYL ANALOGS OF CERTAIN 4,5 DIHYDRO DERIVATIVES OF STEROIDAL $4-3-KETO-HORMONES, COMPRISING THE STEPS OF REACTING A STARTING COMPOUND HAVING THE GENERAL FORMULA:
Claim 3
Dependent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
Claim 4
Dependent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |