Patent US2708197A successfully refreshed from Google Patents.
US2708197A
Expired / Lapsed
US
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Preparation of (hydroxy-3-indole)-alkylamines
Assignee: Pharmacia and Upjohn Co
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Filing: 1952-05-24
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Granted: 1955-05-10
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Expires: 1972-05-24
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Speeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:05
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
20 words
IN A PROCESS FOR THE PREPARATION OF (HYDROXY-3INDOLE)-ALKYLAMINES INCLUDING SALTS THEREOF, THE STEPS OF DEBENZYLATING A (BENZYLOXY-3-INDOLE)-ALKYLAMINE HAVING THE FORMULA:
Claim 2
Dependent Claim
20 words
IN A PROCESS FOR THE PREPARATION OF (HYDROXY-3INDOLE)-ALKYLAMINES INCLUDING SALTS THEREOF, THE STEPS OF DEBENZYLATING A (BENZYLOXY-3-INDOLE)-ALKYLAMINE HAVING THE FORMULA:
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) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |