Patent US3376345A successfully refreshed from Google Patents.
US3376345A
Expired / Lapsed
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Process for preparing poly fluoro anilines and phenols
Assignee: Imperial Chemical Industries Ltd
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Filing: 1964-09-02
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Granted: 1968-04-02
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Expires: 1984-09-02
Abstract
No abstract record available.
Inventors
- 👤 Fielding Harold Crosbie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:26
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C37/02; C07C37/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR REPLACING CHLORINE ATOMS IN FLUOROCHLOROBENZENES WITH SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, AMINO AND ALKYLAMINO COMPRISING HEATING A FLUOROCHLOROBENZENE WITH A SUBSTANCE CHOSEN RESPECTIVELY FROM THE GROUP CONSISTING OF WATER, AMMONIA, METHYLAMINE OR ETHYLAMINE IN THE PRESENCE OF A COPPER COMPOUND SELECTED FROM CUPROUS CHLORIDE, CUPRIC CHLORIDE OR CUPROUS OXIDE AT A TEMPERATURE OF 150*C. TO 400*C.
Claim 2
Dependent Claim
62 words
A PROCESS FOR REPLACING CHLORINE ATOMS IN FLUOROCHLOROBENZENES WITH SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, AMINO AND ALKYLAMINO COMPRISING HEATING A FLUOROCHLOROBENZENE WITH A SUBSTANCE CHOSEN RESPECTIVELY FROM THE GROUP CONSISTING OF WATER, AMMONIA, METHYLAMINE OR ETHYLAMINE IN THE PRESENCE OF A COPPER COMPOUND SELECTED FROM CUPROUS CHLORIDE, CUPRIC CHLORIDE OR CUPROUS OXIDE AT A TEMPERATURE OF 150*C. TO 400*C.
References Cited (Backward Citations)
US2829164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |