US2500131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di-nu-oxides of amino-substituted acridines and quinolines
Assignee: RALPH L EVANS
•
Filing: 1945-06-27
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Granted: 1950-03-07
•
Expires: 1965-06-27
Abstract
No abstract record available.
Inventors
- 👤 Linsker Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:18
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/58; C07D215/60; C07D219/00; C07D219/04; C07D219/08; C07D219/10; C07D219/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AS A COMPOSITION OF MATTER A COMPOUND SELECTED FROM THE CLASS CONSISTING OF 6-METHOXY-8(1-METHYL-4-DIETHYLAMINO) BUTYLAMINO QUINOLINE DI - N - OXIDE; 2 - METHYOXY - 6 - CHLORO - 9 - (1METHYL-4-DIETHYLAMINO) BUTYLAMINO ACRIDINE-DIN-OXIDE; AND THEIR SALTS; IN WHICH COMPOUNDS AN OXIDE OXYGEN ATOM IS LINKED TO A TERTIARY NITROGEN ATOM.
Claim 2
Dependent Claim
51 words
AS A COMPOSITION OF MATTER A COMPOUND SELECTED FROM THE CLASS CONSISTING OF 6-METHOXY-8(1-METHYL-4-DIETHYLAMINO) BUTYLAMINO QUINOLINE DI - N - OXIDE; 2 - METHYOXY - 6 - CHLORO - 9 - (1METHYL-4-DIETHYLAMINO) BUTYLAMINO ACRIDINE-DIN-OXIDE; AND THEIR SALTS; IN WHICH COMPOUNDS AN OXIDE OXYGEN ATOM IS LINKED TO A TERTIARY NITROGEN ATOM.
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) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |