Patent US2897143A successfully refreshed from Google Patents.
US2897143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocatalytic desulphurisation of petroleum hydrocarbons
Assignee: BP PLC
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Filing: 1956-01-16
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Granted: 1959-07-28
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Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 Lester Ronald
- 👤 Porter Hubert Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:41
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR THE HYDROCATALYTIC DESULFURIZATION OF PETROLEUM HYDROCARBONS COMPRISING CONTACTING THE FEEDSTOCK IN THE LIQUID PHASE WITH A SULFUR-RESISTANT HYDROGENATION CATALUST IN A REACTION ZONE AT A REACTION TEMPERATURE SELECTED TO ACHIEVE THE REQUIRED DESULFURIZATION AND AT A PRESSURE SUCH THAT THE FEED-STOCK IS MAINTAINED IN THE LIQUID PHASE, AND SETTING THE INLET TEMPERATURE OF THE INCOMING FEEDSTOCK BELOW THE SELECTED REACTION TEMPERATURE NECESSARY FOR THE REQUIRED DESULFURIZATION AND AT A LEVEL WHICH THE HEAT OF REACTION WILL RAISE THE TEMPERATURE OF THE INCOMING FEEDSTOCK TO THE SELECTED REACTION TEMPERATURE OVER A COMPARATIVELY SHORT INLET PORTION OF THE CATALYST BED.
Claim 2
Dependent Claim
101 words
A PROCESS FOR THE HYDROCATALYTIC DESULFURIZATION OF PETROLEUM HYDROCARBONS COMPRISING CONTACTING THE FEEDSTOCK IN THE LIQUID PHASE WITH A SULFUR-RESISTANT HYDROGENATION CATALUST IN A REACTION ZONE AT A REACTION TEMPERATURE SELECTED TO ACHIEVE THE REQUIRED DESULFURIZATION AND AT A PRESSURE SUCH THAT THE FEED-STOCK IS MAINTAINED IN THE LIQUID PHASE, AND SETTING THE INLET TEMPERATURE OF THE INCOMING FEEDSTOCK BELOW THE SELECTED REACTION TEMPERATURE NECESSARY FOR THE REQUIRED DESULFURIZATION AND AT A LEVEL WHICH THE HEAT OF REACTION WILL RAISE THE TEMPERATURE OF THE INCOMING FEEDSTOCK TO THE SELECTED REACTION TEMPERATURE OVER A COMPARATIVELY SHORT INLET PORTION OF THE CATALYST BED.
References Cited (Backward Citations)
US2376086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |