US2800430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocatalytic desulphurisation of petroleum hydrocarbons
Assignee: BP PLC
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Filing: 1954-11-16
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Granted: 1957-07-23
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Expires: 1974-11-16
Abstract
No abstract record available.
Inventors
- 👤 Porter Frederick Willi Bertram
- 👤 Northcott Roy Purdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:21
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/24; C10G45/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR THE HYDROCATALYTIC DESULPHURISATION OF PETROLEUM HYDROCARBONS, WHICH COMPRISES CONTACTING THE HYDROCARBONS WITH A SULPHUR-RESISTANT DEHYDROGENATIONHYDROGENATION CATALYST UNDER AUTOFINING CONDITIONS OF TEMPERATURE AND SPACE VELOCITY AND RECYLINING THE HYDROGEN-RICH GAS SEPERATED FROM TREATED HYDROCARBONAS UNTIL THE PRESSURE IN THE REACTION ZONE REACHES A PRESSURE WHICH IS APPROXIMATELY EQUAL TO THE AUTOFINING EQUILIBRIUM PRESSURE OF THE FEEDSTOCK UNDER THE CONDITIONS OF CATALYST, TEMPERATURE, AND SPACE VELOCITY, AND THEREAFTER ADDING HYDROGEN OR HYDROGEN-RICH GAS FROM EQUAL EXTERNAL SOURCE AT A RATE TO MAINTAIN AN EQUILIBRIUM PRESSURE VALUE AT A SUBSTANTIALLY CONSTANT LEVEL.
Claim 2
Dependent Claim
92 words
A PROCESS FOR THE HYDROCATALYTIC DESULPHURISATION OF PETROLEUM HYDROCARBONS, WHICH COMPRISES CONTACTING THE HYDROCARBONS WITH A SULPHUR-RESISTANT DEHYDROGENATIONHYDROGENATION CATALYST UNDER AUTOFINING CONDITIONS OF TEMPERATURE AND SPACE VELOCITY AND RECYLINING THE HYDROGEN-RICH GAS SEPERATED FROM TREATED HYDROCARBONAS UNTIL THE PRESSURE IN THE REACTION ZONE REACHES A PRESSURE WHICH IS APPROXIMATELY EQUAL TO THE AUTOFINING EQUILIBRIUM PRESSURE OF THE FEEDSTOCK UNDER THE CONDITIONS OF CATALYST, TEMPERATURE, AND SPACE VELOCITY, AND THEREAFTER ADDING HYDROGEN OR HYDROGEN-RICH GAS FROM EQUAL EXTERNAL SOURCE AT A RATE TO MAINTAIN AN EQUILIBRIUM PRESSURE VALUE AT A SUBSTANTIALLY CONSTANT LEVEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |