US2486794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-alkyl-4-(meta-hydroxyphenyl)-piperidyl-(4)-alkylketones and their production
Assignee: CIBA PHARM PROD Inc
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Filing: 1945-05-07
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Granted: 1949-11-01
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Expires: 1965-05-07
Abstract
No abstract record available.
Inventors
- 👤 Miescher Karl
- 👤 Kaegi Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:27
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/02; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/30; C07D211/32; C07D211/36; C07D211/60; C07D211/62; C07D211/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |