US2506720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion with metal halide catalysts
Assignee: Phillips Petroleum Co
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Filing: 1946-01-18
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Granted: 1950-05-09
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Expires: 1966-01-18
Abstract
No abstract record available.
Inventors
- 👤 Herbert H Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:34
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2786; C07C5/2789
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
IN THE VAPOR-PHASE CONVERSION OF HYDROCARBONS OVER A SUPPORTED FRIEDEL-CRAFTS TYPE METAL HALIDE CATALYST WHEREIN THE CONVERSION IS PERIODICALLY STOPPED WHEN THE PER-PASS CONVERSION FALLS TO A PREDETERMINED MINIMUM VALUE AND SAID CATALYST IS THEN REACTIVATED BY ADDITION OF METAL HALIDE THERETO, THE IMPROVEMENT WHICH COMPRISES INITIATING FLOW OF VAPORS OF SAID HYDROCARBONS AT CONVERSION CONDITIONS OVER A FRESHLY-REACTIVATED CATALYST AT A FLOW RATE SUBSTANTIALLY BELOW THE FLOW RATE WHICH IS OPTIMUM FOR THE GREATER PART
References Cited (Backward Citations)
GB556894A
Cited
US2407637A
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US2342124A
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US2346527A
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US2367333A
Cited
US2423845A
Cited
US2407488A
Cited
US2403181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |