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US3720673A
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Process for the manufacture of quinoxaline 1,4-dioxides
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-05-24
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Granted: 1973-03-13
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Expires: 1991-05-24
Abstract
Abstract A PROCESS FOR THE MANUFACTURE OF GROWTH PROMOTING QUINOXALINE-1,4-DIOXIDE DERIVATIVES WHICH COMPRISES OXIDISING A QUINOXALINE DERIVATIVE WITH HYDROGEN PEROXIDE IN THE PRESENCE OF A TUNGSTEN COMPOUND.
Inventors
- 👤 R Bowie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:53
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/36; C07D241/50; C07D241/52; A; A23; A23K; A23K20/00; A23K20/10; A23K20/116; A23K20/137
Claims Analysis
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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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |