US3825616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating alkylate-containing hydrocarbon with hf in a unitary vessel
Assignee: Phillips Petroleum Co
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Filing: 1971-09-03
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Granted: 1974-07-23
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Expires: 1991-09-03
Abstract
Abstract UPON SEPARATION OF AN ALKYLATION EFFLUENT FROM AN ISOPARAFFIN-OLEFIN HYDROGEN FLUORIDE ALKYLATION INTO A HYDROCARBON PHASE AND AN ACID PHASE, THE HYDROCARBON PHASE, CONTAINING ORGANIC FLUORIDES, IN CONTACTED WITH RELATIVELY PURE HF RESULTING FROM A RERUN OR PURIFACTION OF HF IN THE PRESENCE OF ISOPARAFFIN WHICH ACTS TO CONVERT AND, THEREFORE, TO REDUCE ORGANIC FLUORIDE CONTENT OF THE HF BEING RERUN. ADDITIONAL RERUN HF SUBSTANTIALLY FREE FROM OR HAVING A CNSIDERABLY REDUCED ORGANIC FLUORIDE CONTENT CAN BE USED TO FURTHER REDUCE ORGANIC FLUORIDE IN SAID HYDROCARBON PHASE.
Inventors
- 👤 C Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:26
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; B; B01; B01J; B01J27/00; B01J27/28; B01J27/32; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |