US3736345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steroid-like compounds and method of synthesis
Assignee: Wyeth Holdings LLC
•
Filing: 1971-05-18
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Granted: 1973-05-29
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Expires: 1991-05-18
Abstract
Abstract THIS INVENTION RELATES TO NOVEL STEROID-LIKE COMPOUNFS, A METHOD FOR THE SYNTHESIS THEREOF AS INTERMEDIATES FOR PREPARING OTHER STEROIDS AND FOR THE USE OF SUCH COMPOUNDS AS ESTROGENIC, ANDROGENIC OR ANTIOVULATORY AGENTS IN THE TREATMENT OF DOMESTIC AND LABORATORY ANIMALS.
Inventors
- 👤 M Los
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:08
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/92; C07C; C07C41/00; C07C41/01; C07C41/16; C07C41/18; C07C41/20; C07C62/00; C07C62/30; C07C62/34; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/22; C07C2603/26
Claims Analysis
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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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |