US3694447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complexes of phosphanilic acid and 9-amino-3-nitroacridine
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1970-03-10
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Granted: 1972-09-26
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Expires: 1990-03-10
Abstract
Abstract Complexes of phosphanilic acid and an aminoacridine possess broad-spectrum antibacterial and antifungal activity when used topically. The preferred complex is a 1:1 complex of phosphanilic acid and 9-amino-3-nitroacridine.
Inventors
- 👤 Joseph F Pagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
C; C07; C07D; C07D219/00; C07D219/04; C07D219/08; C07D219/10; A; A01; A01N; A01N43/00; A01N43/34; A01N43/40; A01N43/42; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3834
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A complex according to claim 1, consisting of 9-amino-3-nitroacridine and 2 equivalents of phosphaniic acid.
Claim 2
Dependent Claim
15 words
A complex according to claim 1, consisting of 9-amino-3-nitroacridine and 1 equivalent of phosphanilic acid.
References Cited (Backward Citations)
US2092131A
Cited
US2245539A
Cited
US2605280A
Cited
US3122553A
Cited
US3346579A
Cited
US3442938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |