US2785165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 4-aminoquinoline
Assignee: Abbott Laboratories
•
Filing: 1953-12-22
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Granted: 1957-03-12
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Expires: 1973-12-22
Abstract
No abstract record available.
Inventors
- 👤 Richard U Schock
- 👤 Herman J Eichel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:00
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D215/233; C07D215/18; C07D215/24; C07D215/26; C07D215/38; C07D215/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
IN THE METHOD OF SYNTHESIZING A SUBSTITUTED 2-PHERYLQUINOLINE HAVING AN AMINE GROUP IN THE 4 POSITION, THE STEP WHICH COMPRISES HEATING A 2-PHENYL-4CHLOROQUINILINE WITH A MATERIAL ACID SALT OF AN AMINE HAVING THE FORMULA
Claim 2
Dependent Claim
34 words
IN THE METHOD OF SYNTHESIZING A SUBSTITUTED 2-PHERYLQUINOLINE HAVING AN AMINE GROUP IN THE 4 POSITION, THE STEP WHICH COMPRISES HEATING A 2-PHENYL-4CHLOROQUINILINE WITH A MATERIAL ACID SALT OF AN AMINE HAVING THE FORMULA
References Cited (Backward Citations)
US2546658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |