US3644618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable composition of synthetic sodium estrone sulfate
Assignee: Merck Frosst Canada and Co
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Filing: 1968-10-29
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Granted: 1972-02-22
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Expires: 1988-10-29
Abstract
Abstract THE INVENTION DISCLOSED HEREIN RELATES TO A SYNTHETIC SODIUM ESTRONE SULFATE PREPARATION COMPRISING SYNTHETIC SODIUM ESTRONE SULFATE IN ADMIXTURE WITH A WATER AND ALCOHOL SOLUBLE EXTRACT OF PREGNANT MARES'' URINE.
Inventors
- 👤 George W Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:21
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/565; A61K31/566; A61K35/00; A61K35/12; A61K35/22; C; C07; C07J; C07J31/00; C07J31/006
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |