US2500714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-phenyl-1-alkyl isonipecotic acid lactones
Assignee: Abbott Laboratories
•
Filing: 1944-10-30
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Granted: 1950-03-14
•
Expires: 1964-10-30
Abstract
No abstract record available.
Inventors
- 👤 Marvin A Spielman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:34
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
29 words
ISONIPECOTIC ACID LACTONE COMPOUNDS AND ACID ADDITION PRODUCTS THEREOF IN WHICH THE LACTONE COMPOUNDS CONTAINING ONE BENZENE RING AND ONE PIPERIDINE RING ARE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
29 words
ISONIPECOTIC ACID LACTONE COMPOUNDS AND ACID ADDITION PRODUCTS THEREOF IN WHICH THE LACTONE COMPOUNDS CONTAINING ONE BENZENE RING AND ONE PIPERIDINE RING ARE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2044015A
Cited
US2167351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |