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US3755492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separate alkyl fluoride alkylation with a substantially pure hydrogenfluoride stream
Assignee: Universal Oil Products Co
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Filing: 1971-03-12
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Granted: 1973-08-28
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Expires: 1991-03-12
Abstract
Abstract ALKYLATABLE HYDROCARBON, I.E. ISOBUTANE, ISOPENTANE OR ISOHEXANE, AND AN OLEFINIC HYDROCARBON ARE REACTED IN A HYDROGEN FLUORIDE CATALYZED PROCESS, THE EFFLUENT FROM THE REACTION ZONE IS COMMINGLED WITH A SUBSTANTIALLY PURE HYDROGEN FLUORIDE STREAM TO ALKYLATE ALKYL FLUORIDES PRESENT IN SAID EFFLUENT. THIS SUBSTANTIALLY PURE HF STREAM IS SUPPLIED FROM (1) A CATALYST REGENERATION STEP, (2) HF SEPARATED FROM THE COOLED HYDROCARBON PHASE AND (3) HF SEPARATED FROM AN OVERHEAD HYDROCARBON FRACTION.
Inventors
- 👤 R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:43
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |