US3171865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the purification of a used liquid acid alkylation catalyst
Assignee: Phillips Petroleum Co
•
Filing: 1961-08-22
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Granted: 1965-03-02
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Expires: 1981-08-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Davison
- 👤 Rolland E Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:35
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/28; B01J27/32; 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; Y02P20/584
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
IN A METHOD FOR PURIFICATION OF AN ALKYLATION REACTION EFFLUENT, THE ALKYALTION EMPLOYING A LIQUID ACID ALKYLATION CATALYST WHICH IS NOT MISCIBLE WITH THE ALKYLATE PRODUCED AND WHICH DURING THE ALKYLATION ACCUMULATES CATALYSTS IMPURITES WHICH ARE REMOVED WHICH COMPRISES PERFORMING AN ALKYLATION WITH SAID LIQUID CATALYST IN AN ALKYLATION ZONE, ALLOWING THE ALKYLATION EFFLUENT REACTION MASS THUS OBTAINED TO SETTLE AND TO FORM TWO PHASES, A CATALYST PHASE AND AN ALKYLATE PHASE, SEPARATING SAID PHASES, THE IMPROVEMENT WHICH COMPRISES PASSING AT LEAST A PORTION OF THE CATALYST PHASE INTO A VAPORIZING ZONE, VAPORIZING SAID PORTION THEREIN, PASSING VAPORS THUS OBTAINED UPWARDLY INTO A TOTAL CONDENSING SECTION WITHIN SAID ZONE, IN SAID CONDENSING SECTION TOTALLY CONDENSING
References Cited (Backward Citations)
US704011A
Cited
US1547893A
Cited
US2341281A
Cited
US2320629A
Cited
US2389971A
Cited
US2408933A
Cited
US2417875A
Cited
US2426559A
Cited
US2448092A
Cited
US2507632A
Cited
US2531112A
Cited
US2560075A
Cited
US2591010A
Cited
US2813134A
Cited
US2803588A
Cited
US2774727A
Cited
US2914590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |