US2846437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lower alkyl 4-phenyl-1-(substituted-alkyl) piperidine-4-carboxylates and preparationthereof
Assignee: STWB Inc
•
Filing: 1955-09-12
•
Granted: 1958-08-05
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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 12:46
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
15 words
A COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
15 words
A COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING 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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |