Patent US3825535A successfully refreshed from Google Patents.
US3825535A
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US
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Hydrazines,hydrazides and hydrazones of isoxazolopyridine carboxylic acids and esters
Assignee: ER Squibb and Sons LLC
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Filing: 1973-03-05
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Granted: 1974-07-23
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Expires: 1993-03-05
Abstract
Abstract NEW HYDRAZINES, HYDRAZIDES AND HYDRAZONES OF ISOXAZOLO-PYRIDINE CARBOXYLIC ACIDS AND ESTERS HAVING THE GENERAL FORMULAS 3-R,4-(R2-N(-R3)-NH-),5-(R1O-CO-)-ISOXAZOLO(5,4-B)PYRIDINE AND 3-R,4-(Y-C(-X)=N-NH-),5-(R1O-CO-)-ISOXAZOLO(5,4-B)PYR IDINE AND SALTS THEREOF, ARE USEFUL AS CENTRAL NERVOUS SYSTEM DEPRESSANTS AND ALSO INCREASE THE INTRACELLULAR CONCENTRATION OF ADENOSINE-3'',5''-CYCLIC MONOPHOSPHATE.
Inventors
- 👤 T Denzel
- 👤 H Hoehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:01
CPC Classifications
C; C07; C07D; C07D261/00; C07D261/02; C07D261/06; C07D261/10; C07D261/14
Claims Analysis
Total Claims: 0
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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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |