US3752850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorination of aliphatic compounds
Assignee: Hoechst AG
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Filing: 1970-12-24
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Granted: 1973-08-14
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Expires: 1990-12-24
Abstract
Abstract FLUORINATION OF HALOGENATED ALIPHATIC HYDROCARBON IS EFFECTED BY REACTING SAID HYDROCARBONS WITH HYDROGEN FLUORIDE IN GASEOUS PHASE AT ELEVATED TEMPERATURES IN THE PRESENCE OF A CATALYST, THE EMPIRICAL COMPOSITION OF WHICH VARIES SUCH AS BETWEEN CRF1.5O1.5 AND CRF2O OR A CATALYST, THE EMPIRICAL COMPOSITION OF WHICH VARIES SUCH AS BETWEEN CRFO2 AND CRF2O.
Inventors
- 👤 O Scherer
- 👤 J Korinth
- 👤 P Frisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:52
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/63; C07B; C07B39/00; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206; C07C17/21
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |