US3461118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3beta-tetrahydrofuranyloxy - and 3beta-tetrahydropyranyloxyestra - 4,9(10) - dienes and -4,9(10),11-trienes,their preparation and intermediates thereof
Assignee: Roche Palo Alto LLC
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Filing: 1966-10-17
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Granted: 1969-08-12
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 John A Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:33
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/565; A61K31/567; A61K31/566; A61K31/58; C; C07; C07J; C07J17/00; C07J75/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3134771A
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US3248294A
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US3257278A
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US3213086A
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US3250793A
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US3290297A
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US3341527A
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US3357975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |