Patent US3076829A successfully refreshed from Google Patents.
US3076829A
Expired / Lapsed
US
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Novel 9, 11-disubstituted estratriene derivatives
Assignee: Merck Sharp & Dohme LLC
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Filing: 1961-09-15
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Granted: 1963-02-05
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Expires: 1981-09-15
Abstract
No abstract record available.
Inventors
- 👤 Reimann Hans
- 👤 Cecil H Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:57
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF 1,3,5(10)-ESTRATRIENES HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
14 words
A COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF 1,3,5(10)-ESTRATRIENES HAVING THE FOLLOWING STRUCTURAL 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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |