Patent US2997478A successfully refreshed from Google Patents.
US2997478A
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Oxygenated piperidines and processes for their manufacture
Assignee: Merck Sharp & Dohme LLC
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Filing: 1958-07-21
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Granted: 1961-08-22
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Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Walter
- 👤 Sperber Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:20
CPC Classifications
C; C10; C10G; C10G19/00; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/42; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/63; C07D213/65; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/46; C07D307/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
2-BENZHYDRYL-3-ACETOXYPIPERIDINE.
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PIPERDINE COMPOUNDS OF THE FORMULA:
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |