Patent US2715129A successfully refreshed from Google Patents.
US2715129A
Expired / Lapsed
US
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Process for producing 5-hydroxytryptamine
Assignee: Abbott Laboratories
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Filing: 1951-10-09
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Granted: 1955-08-09
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Expires: 1971-10-09
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Hamlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:00
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18; C07D209/14; C07D209/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
THE PROCESS WHICH COMPRISES INTIMATELY ADMIXING 5-BENZYLOXYINDOLE WITH FORMALIN AND DIMETHYLAMINE, HEATING THE RESULTING 5-BENZYLOXYGRAMINE WITH A CYANIDE SALT, REDUCING THE RESULTING 5-BENZLOXYINDOLE-3-ACETAMIDE, HYDROGENATING THE RESULTING 5-BENZYLOXYTRYPTAMINE TO PRODUCE 5-HYDROXYTRYPTAMINE.
Claim 2
Dependent Claim
30 words
THE PROCESS WHICH COMPRISES INTIMATELY ADMIXING 5-BENZYLOXYINDOLE WITH FORMALIN AND DIMETHYLAMINE, HEATING THE RESULTING 5-BENZYLOXYGRAMINE WITH A CYANIDE SALT, REDUCING THE RESULTING 5-BENZLOXYINDOLE-3-ACETAMIDE, HYDROGENATING THE RESULTING 5-BENZYLOXYTRYPTAMINE TO PRODUCE 5-HYDROXYTRYPTAMINE.
References Cited (Backward Citations)
US2416258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |