US2686784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperidine derivatives
Assignee: F Hoffmann La Roche AG
•
Filing: 1950-07-15
•
Granted: 1954-08-17
•
Expires: 1970-07-15
Abstract
No abstract record available.
Inventors
- 👤 Finkelstein Jacob
- 👤 Paterson East
- 👤 Lee John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:39
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-ALKYL-2-DIALKYLAMINOPHENETHYL-PIPERIDINES, 1-ALKYL-4-DIALKYLAMINOPHENETHYL-PIPERIDINES, AND SALTS OF THESE PIPERIDINES; EACH OF THE ALKYL GROUPS IN SAID COMPOUND BEING A LOWER ALKYL GROUP.
Claim 2
Dependent Claim
28 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-ALKYL-2-DIALKYLAMINOPHENETHYL-PIPERIDINES, 1-ALKYL-4-DIALKYLAMINOPHENETHYL-PIPERIDINES, AND SALTS OF THESE PIPERIDINES; EACH OF THE ALKYL GROUPS IN SAID COMPOUND BEING A LOWER ALKYL GROUP.
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2355659A
Cited
GB595631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |