US2649456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha, alpha-diphenyl-gamma-(nu-methyl-2-piperidyl)-butyramides and acid addition and quaternary ammonium derivatives thereof
Assignee: MALTBIE LAB Inc
•
Filing: 1952-07-05
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Granted: 1953-08-18
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Expires: 1972-07-05
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Walter
- 👤 Richard H Barry
- 👤 John R Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A COMPOUND OF THE CLASS CONSISTING OF A,ADIPHENYL-Y-(N-METHYL-2-PIPERIDYL)-BUTYRAMIDES OF THE FORMULA:
Claim 2
Dependent Claim
11 words
A COMPOUND OF THE CLASS CONSISTING OF A,ADIPHENYL-Y-(N-METHYL-2-PIPERIDYL)-BUTYRAMIDES OF 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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |