US2947757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 5-hydroxy-tryptamine through new intermediates
Assignee: Francesco Vismara SpA
•
Filing: 1957-02-18
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Granted: 1960-08-02
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Expires: 1977-02-18
Abstract
No abstract record available.
Inventors
- 👤 Justoni Romeo
- 👤 Pessina Raffaele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:01
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/14; C07D209/16; C07C; C07C251/00; C07C251/72
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
B-(3-(5-BENZYLOXY)-INDOLYL)-ETHYLCARBAMIC ACID ESTERS OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |