Patent US3580951A successfully refreshed from Google Patents.
US3580951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fluoroanilines
Assignee: Olin Corp
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Filing: 1969-01-10
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Granted: 1971-05-25
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Expires: 1989-01-10
Abstract
Abstract FLUOROANILINES ARE PREPARED BY THE DEOXYGENATION AND HYDROFLUORINATION OF THE CORRESPONDING NITROBENZENES WHICH ARE REACTED IN ANHYDROUS HYDROGEN FLUORIDE AND IN AN ATMOSPHERE OF CARBON MONOXIDE AT 0* TO 230*C. UNDER PRESSURES OF FROM 15 TO 3000 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
- 👤 Curtis P Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:18
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68; C07C209/74; C07C209/04; C07C209/06; C07C209/10; C07C209/30; C07C209/32; C07C209/36; C07C211/00; C07C211/43; C07C211/44; C07C211/52
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |