US2863825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic reforming of hydrocarbon oils
Assignee: Shell Development Co
•
Filing: 1955-08-29
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Granted: 1958-12-09
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Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 Engel Willem Frederik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J37/00; B01J37/20; C; C10; C10G; C10G35/00; C10G35/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR THE CATALYTIC REFORMING OF NAPHTHA BY CONTACT WITH A CATALYST CONSISTING OF PLATIUM SUPPORTED ON AN ALUMUNOUS CARRIER MATERIAL, WHICH COMPRISES HEATING AN ACTIVE PORTION OF SAID CALYST IN A REACTOR WHILE PASSING HYDROGEN THERETHORUGH, TREATING SAID CATALYST, WHEN IT HAS BEEN BROUGHT TO AN ELEVATED TEMPERATURE, WITH HYDROGEN CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN SULFIDE AND SULFUR VAILING CONDITIONS, AT A CONCENTRATION OF BWTWEEN 0.005 AND 5% BY VOLUME OF HYDROGEN SULFIDE, AND THEN PASSING SAID NAPHTHA INTO CONTACT WITH SAID CATLYST AFTER THE CATALYST IS THE DESIRED REACTION TEMPERATURE WHILE RECYCLING SUBSTANTIALLY SULFUR-FREE HYDROGEN TO SAID CATALYST.
Claim 2
Dependent Claim
106 words
A PROCESS FOR THE CATALYTIC REFORMING OF NAPHTHA BY CONTACT WITH A CATALYST CONSISTING OF PLATIUM SUPPORTED ON AN ALUMUNOUS CARRIER MATERIAL, WHICH COMPRISES HEATING AN ACTIVE PORTION OF SAID CALYST IN A REACTOR WHILE PASSING HYDROGEN THERETHORUGH, TREATING SAID CATALYST, WHEN IT HAS BEEN BROUGHT TO AN ELEVATED TEMPERATURE, WITH HYDROGEN CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN SULFIDE AND SULFUR VAILING CONDITIONS, AT A CONCENTRATION OF BWTWEEN 0.005 AND 5% BY VOLUME OF HYDROGEN SULFIDE, AND THEN PASSING SAID NAPHTHA INTO CONTACT WITH SAID CATLYST AFTER THE CATALYST IS THE DESIRED REACTION TEMPERATURE WHILE RECYCLING SUBSTANTIALLY SULFUR-FREE HYDROGEN TO SAID CATALYST.
References Cited (Backward Citations)
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Cited
US2667461A
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US2654694A
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US2765264A
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US2762752A
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US2730556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |