Patent US3642803A successfully refreshed from Google Patents.
US3642803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-(omega-substituted alkyl)-indoles
Assignee: AH Robins Co Inc
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Filing: 1966-06-13
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Granted: 1972-02-15
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Expires: 1986-06-13
Abstract
Abstract 3-(OMEGA-SUBSTIUTED ALKYL)-INDOLES ARE DISCLOSED WHICH ARE USEFUL IN AMELIORATING THE TREMORS OF PARKINSONISM. THE COMPOUNDS ARE PREPARED BY METAL HYDRIDE REDUCTION OF THE PRECURSOR INDOLE GLYOXYLOYL COMPOUNDS.
Inventors
- 👤 William J Welstead Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:35
CPC Classifications
A; A61; A61K; A61K31/00
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |