US3301880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3, 3-alkylidene-19-nor-steroids
Assignee: Organon NV
•
Filing: 1964-10-19
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Granted: 1967-01-31
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Nicolaas Pieter Van Vliet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:56
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/565; A61K31/567; A61K31/566; C; C07; C07J; C07J1/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
4 words
STEROIDS OF THE 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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |