US3567788A
Expired / Lapsed
US
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Preparation of fluorine-containing compounds
Assignee: Hooker Chemical Corp
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Filing: 1967-07-25
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Granted: 1971-03-02
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Expires: 1987-07-25
Abstract
Abstract COMPOUNDS OF THE FORMULA X-C<(-R1-C(-X)=), R2-C(-X)=C(-X)-R3, AND MIXTURES OF THESE, WHEREIN THE R''S ARE PERHALOGENATED HYDROCARBON RADICALS AND THE X''S ARE HALOGENS, ARE FLUORINATED WITH AN ALKALI METAL FLUORIDE IN AN INERT POLAR ORGANIC SOLVENT, SUCH AS DIMETHYLFORMAMIDE OR DIMETHYL SULFOXIDE.
Inventors
- 👤 Russell L K Carr
- 👤 Charles F Baranauckas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:14
CPC Classifications
C; C07; C07C; C07C23/00; C07C23/02; C07C23/08; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |