US3758687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contraceptive method and composition
Assignee: Bayer Pharma AG
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Filing: 1971-04-20
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Granted: 1973-09-11
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Expires: 1991-04-20
Abstract
Abstract Conception is prevented in a female of reproductive age without suppressing ovulation by administering to such female within the period starting with the fifth and ending with the eighth day of the menstrual cycle an effective amount of a progestogene which when administered in such amount effective for preventing conception has at most an insignificant suspension effect on gonadotropin secretion.
Inventors
- 👤 J Ufer
- 👤 K Kimbel
- 👤 U Lachnit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:52
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/57
Claims Analysis
Total Claims: 0
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |