Patent US3558707A successfully refreshed from Google Patents.
US3558707A
Expired / Lapsed
US
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Process for preparing fluoroanilines
Assignee: Olin Corp
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Filing: 1968-09-09
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Granted: 1971-01-26
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Expires: 1988-09-09
Abstract
Abstract FLUOROANILINES ARE PREPARED BY THE DEOXYGENATION AND HYDROFLUORINATION OF THE CORRESPONDING NITROBENZENES WHICH ARE REACTED IN ANHYDROUS HYDROGEN FLUORIDE AT 0* TO 230*C. UNDER PRESSURES OF FROM 15 TO 1500 P.S.I.A. IN THE PRESENCE OF CERTAIN DEOXYGENATING AGENTS CONTAINING PHOSPHORUS OR SULFUR.
Inventors
- 👤 John W Churchill
- 👤 Ehrenfried H Kober
- 👤 Peter H Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:48
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |