US2814625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-indolyl amino hydrocarbyl ketones
Assignee: Pharmacia and Upjohn Co
•
Filing: 1954-04-28
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Granted: 1957-11-26
•
Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Speeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:19
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07D209/60; C07D209/02; C07D209/04; C07D209/10; C07D209/14; C07D209/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
IN A PROCESS FOR THE PREPARATION OF 3-(AMINOHYDROCARBYL)-INDOLES INCLUDING ACID ADDITION SALTS THEREOF, THE STEP OF REDUCING WITH LITHIUM ALUMINUM HYDRIDE A 3-INDOLYL AMINOHYDROCARBYL KETONE HAVING THE FORMULA:
Claim 2
Dependent Claim
28 words
IN A PROCESS FOR THE PREPARATION OF 3-(AMINOHYDROCARBYL)-INDOLES INCLUDING ACID ADDITION SALTS THEREOF, THE STEP OF REDUCING WITH LITHIUM ALUMINUM HYDRIDE A 3-INDOLYL AMINOHYDROCARBYL KETONE HAVING 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) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |