US3758561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-loweralkylamino-4-amino benzoic acids, their salts and esters, and acid addition salts thereof
Assignee: Merck and Co Inc
•
Filing: 1970-04-03
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Granted: 1973-09-11
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Expires: 1990-04-03
Abstract
Abstract The 2-loweralkylamino-4-amino benzoic acids are prepared by catalytic hydrogenation of 2-loweralkylamino-4-nitrobenzoic acid. These compounds, as well as their loweralkyl esters, alkaline metal or alkaline metal earth salts, and the non-toxic acid addition salts thereof are useful for controlling coccidiosis.
Inventors
- 👤 E Rogers
- 👤 R Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:00
CPC Classifications
A; A23; A23K; A23K20/00; A23K20/10; A23K20/111
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
3 words
2-Ethylamino-4-amino benzoic acid.
References Cited (Backward Citations)
US3211611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |