Patent US2901487A successfully refreshed from Google Patents.
US2901487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certificate of correction
Assignee: —
•
Filing: —
•
Granted: 1959-08-25
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Expires: 1976-08-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:57
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D211/62; C07D211/64; C07D211/56; C07D211/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF LOWER-ALKYL 4-PHENYL-1-(HIGHER-ALKYL)PIPERIDINE-4-CARBONXYALTES WHERE THE LOWER-ALKYL RADICALS HAS FROM ONE TO FOUR CARBON ATOMS INCLUSIVE AND THE HIGHERALKYL RADICAL HAS FROM SIX TO NINE CARBON ATOMS INCLUSIVE, AND ACID-ADDITION SALT THEREOF.
Claim 2
Dependent Claim
40 words
A COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF LOWER-ALKYL 4-PHENYL-1-(HIGHER-ALKYL)PIPERIDINE-4-CARBONXYALTES WHERE THE LOWER-ALKYL RADICALS HAS FROM ONE TO FOUR CARBON ATOMS INCLUSIVE AND THE HIGHERALKYL RADICAL HAS FROM SIX TO NINE CARBON ATOMS INCLUSIVE, AND ACID-ADDITION SALT THEREOF.
References Cited (Backward Citations)
US2167351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |