US3067195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
16-alkyl-3-hydroxy-9(11)-pregnen-20-one compounds and the 3-lower alkyl esters thereof
Assignee: Merck and Co Inc
•
Filing: 1959-01-30
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Granted: 1962-12-04
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Expires: 1979-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank A Cutler
- 👤 John M Chemerda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:28
CPC Classifications
C; C07; C07J; C07J71/00; C07J5/00; C07J7/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
16B-ALKYL-16A,17A-EPOXY-3A-HYDROXY-9(11) - PREGNEN-20-ONE.
Claim 2
Dependent Claim
3 words
16B-ALKYL-16A,17A-EPOXY-3A-HYDROXY-9(11) - PREGNEN-20-ONE.
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) | 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 |