US2652398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-substituted-2-amino (methyl) quinolines
Assignee: ENDO PRODUCTS Inc
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Filing: 1949-11-17
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Granted: 1953-09-15
•
Expires: 1969-11-17
Abstract
No abstract record available.
Inventors
- 👤 Kaye Irving Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:47
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/38; C07D405/00; C07D405/02; C07D405/12; C07D409/00; C07D409/02; C07D409/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
COMPOUNDS OF THE CLASS CONSISTING OF THE FREE BASES AND THEIR ACID ADDITION SALTS WHEREIN THE FREE BASES HAVE THE GENERAL FORMULA:
Claim 2
Dependent Claim
22 words
COMPOUNDS OF THE CLASS CONSISTING OF THE FREE BASES AND THEIR ACID ADDITION SALTS WHEREIN THE FREE BASES HAVE THE GENERAL FORMULA:
References Cited (Backward Citations)
US2086691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |