US3577430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxindole acetic acid amides
Assignee: Janssen Pharmaceuticals Inc
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Filing: 1969-02-17
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Granted: 1971-05-04
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Expires: 1989-02-17
Abstract
Abstract THE COMPOUNDS ARE OF THE CLASS OF 2-OXINDOLE ACETAMIDES USEFUL AS ULTRA-VIOLET LIGHT ABSORBERS AND HAVING CENTRAL NERVOUS SYSTEM DEPRESSANT ACTIVITY; AND OF THE CLASS OF 2-OXO-3-INDOLINE ACETATE ESTERS USEFUL AS INTERMEDIATES IN THE PREPARATION OF SAID ACETAMIDES.
Inventors
- 👤 Janis Plostnieks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; 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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |