US2824875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certificate of correction
Assignee: —
•
Filing: —
•
Granted: 1958-02-25
•
Expires: 1975-02-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
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: 4
Claim 1
Independent Claim
31 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A LOWER ALKYL 4 - PHENYL - 1 - (3 - PHENYL - PROPENYL)PIPERIDINE-4-CARBOXYLATE, A LOWER ALKYL 4-PHENYL-1-(3-PHENYLPROPYNL)PIPERIDINE-4-CARBOXYLATE, AND ITS ACID ADDITION SALTS.
Claim 2
Dependent Claim
31 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A LOWER ALKYL 4 - PHENYL - 1 - (3 - PHENYL - PROPENYL)PIPERIDINE-4-CARBOXYLATE, A LOWER ALKYL 4-PHENYL-1-(3-PHENYLPROPYNL)PIPERIDINE-4-CARBOXYLATE, AND ITS ACID ADDITION SALTS.
Claim 3
Dependent Claim
9 words
THE PROCESS OF PREPARING A COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
9 words
THE PROCESS OF PREPARING A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2486795A
Cited
US2167351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |