Patent US3825558A successfully refreshed from Google Patents.
US3825558A
Expired / Lapsed
US
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Substituted aminopropoxy-2-indolinones
Assignee: Sandoz AG
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Filing: 1972-06-19
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Granted: 1974-07-23
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Expires: 1992-06-19
Abstract
Abstract THE PRESENT INVENTION CONCERNS NOVEL HETEROCYCLIC COMPOUNDS OF THE FORMULA: 1-R1,(R2-NH-CH2-CH(-OR3)-CH2-O-)-2-INDOLINONE WHEREIN R1 IS HYDROGEN OR ALKYL, R2 IS A SUBSTITUTED OR UNSUBSTITUTED AROMATIC OR ALIPHATIC HYDROCARBON AND R3 IS HYDROGEN OR A CARBONYL SUBSTITUENT AND THE SIDE CHAIN IS IN THE 4 OR 7 POSITION OF THE OXINDOLE NUCLEUS. THE COMPOUNDS POSSESS PHARMACOLOGICAL PROPERTIES.
Inventors
- 👤 F Seemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:54
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/30; C07D209/32; C07D209/34
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 |