US3366699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of highly fluorinated aromatic compounds
Assignee: Imperial Smelting Corp Ltd
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Filing: 1966-01-03
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Granted: 1968-01-30
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Fuller George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:22
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR THE PREPARATION OF CHLOROFLUOROBENZENES AND HYDROCHLOROFLUOROBENZENES COMPRISING HEATING AT A TEMPERATURE BETWEEN 30*C. AND 250*C. THE CORRESPONDING COMPOUND SELECTED FROM THE GROUP CONSISTING OF BROMOFLUOROBENZENES AND IODOFLUOROBENZENES WITH CUPROUS CHLORIDE IN A POLAR APROTIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF DIMETHYL FORMAMIDE, DIMETHYL SULPHONE, DIMETHYL SULPHOXIDE AND SULPHOLANE.
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE PREPARATION OF CHLOROFLUOROBENZENES AND HYDROCHLOROFLUOROBENZENES COMPRISING HEATING AT A TEMPERATURE BETWEEN 30*C. AND 250*C. THE CORRESPONDING COMPOUND SELECTED FROM THE GROUP CONSISTING OF BROMOFLUOROBENZENES AND IODOFLUOROBENZENES WITH CUPROUS CHLORIDE IN A POLAR APROTIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF DIMETHYL FORMAMIDE, DIMETHYL SULPHONE, DIMETHYL SULPHOXIDE AND SULPHOLANE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |