US3067194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4, 6-pregnadieno-[3, 2-c] pyrazoles and processes of preparing them
Assignee: Merck and Co Inc
•
Filing: 1961-12-01
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Granted: 1962-12-04
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Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Tishler Max
- 👤 Nathan G Steinberg
- 👤 Ralph F Hirschmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/57; A61K31/573; A61K31/58; C; C07; C07J; C07J21/00; C07J21/005; C07J5/00; C07J5/0046; C07J5/0053; C07J71/00; C07J71/0036; C07J71/0042; C07J71/0047; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUND SELECTED FROM THE GROUP OF COMPOUNDS HAVING STRUCTURAL FORMULAS A AND B:
Claim 2
Dependent Claim
33 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 6-FLUORO-11B,17A,21-TRIHYDROXY-20-OXO-4,6 - PREGNADIENO(3,2-C)PYRAZOLE, AND THE N-LOWER HYDROCARBON CARBOXYLIC ACYL, THE 21-LOWER HYDROCARBON CARBOXYLIC ACYLATE AND THE N-LOWER HYDROCARBON CARBOXYLIC ACYL-21-LOWER HYDROCARBON CARBOXYLIC ACYLATE DERVATIVES THEREOF.
References Cited (Backward Citations)
US2945852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |