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Patent US2914532A successfully refreshed from Google Patents.
US2914532A
Expired / Lapsed
US
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Lower alkyl 4-phenyl-1-(3-phenylpropyl) piperidine-4-carboxylates and their preparation
Assignee: STWB Inc
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Filing: 1955-09-12
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Granted: 1959-11-24
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Expires: 1975-09-12
Abstract
No abstract record available.
Inventors
- 👤 Elpern Bill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:38
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D211/62; C07D211/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
LOWER ALKYL 4-PHENYL-1(3-PHENYLPROPYL)PIPERIDINE4-CARBOXYLATES.
Claim 2
Dependent Claim
3 words
LOWER ALKYL 4-PHENYL-1(3-PHENYLPROPYL)PIPERIDINE4-CARBOXYLATES.
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) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |