US2653971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of anthranilic acid
Assignee: Maumee Dev Co
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Filing: 1951-07-27
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Granted: 1953-09-29
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Expires: 1971-07-27
Abstract
No abstract record available.
Inventors
- 👤 Clyde W Balch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:00
CPC Classifications
C; C07; C07C; C07C227/00; C07C227/14; C07C227/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A METHOD FOR THE MANUFACUTURE OF ANTHRANILIC ACID, THE STEPS WHICH COMPRISE RAPIDLY ADMIXING IN ALKALINE AQUEOUS SOLUTION A SOLUTION OF SODIUM HYPOCHLORITE AT A TEMPERATURE NOT EXCEEDING 15* C. WITH AN ALKALINE SOLUTION OF PHTHALIMIDE AT A TEMPERATURE NOT EXCEEDING 35* C., THE RATE OF ADMIXTURE BEING SUCH THAT THE ADMIXTURE IS COMPARED BEFORE THE HEAT OF REACTION CAN RAISE THE TEMPERATURE SUBSTANTIALLY ABOVE 30* C.
Claim 2
Dependent Claim
68 words
IN A METHOD FOR THE MANUFACUTURE OF ANTHRANILIC ACID, THE STEPS WHICH COMPRISE RAPIDLY ADMIXING IN ALKALINE AQUEOUS SOLUTION A SOLUTION OF SODIUM HYPOCHLORITE AT A TEMPERATURE NOT EXCEEDING 15* C. WITH AN ALKALINE SOLUTION OF PHTHALIMIDE AT A TEMPERATURE NOT EXCEEDING 35* C., THE RATE OF ADMIXTURE BEING SUCH THAT THE ADMIXTURE IS COMPARED BEFORE THE HEAT OF REACTION CAN RAISE THE TEMPERATURE SUBSTANTIALLY ABOVE 30* C.
References Cited (Backward Citations)
DE55988C
Cited
US1322052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |