Patent US4740083A successfully refreshed from Google Patents.
Patent US2508014A successfully refreshed from Google Patents.
US2508014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic reforming of gasoline
Assignee: Shell Development Co
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Filing: 1947-05-16
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Granted: 1950-05-16
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Expires: 1967-05-16
Abstract
No abstract record available.
Inventors
- 👤 Donald D Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:55
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE PROCESS FOR THE SUBSTANTIALLY CONTINUOUS UPGRADING OF MOTOR FUELS BY CATALYTIC TREATMENT WITH HYDROGEN WHICH COMPRISES SUBSTANTIALLY CONTINUOUSLY VAPORIZING A STRAIGHT-RUN GASOLINE FRACTION BOILING PREDOMINATELY WITHIN THE RANGE OF 185*F. AND 500*F. AND HAVING A CLEAR F-2 OCTANE NUMBER BELOW 48, SUBSTANTIALLY CONTINUOUSLY CONTACTING THE VAPORIZED GASOLINE IN THE PRESENCE OF AT LEAST 2500 CU. FT. PER BARREL OF HYDROGEN AT A LIQUID HOURLY SPACE VELOCITY BETWEEN 0.5 AND 3. A TEMPERATURE BETWEEN 825*F. AND 1025*F., AND A PRESSURE OF AT LEAST 500 P. S. I. G., WITH AN IMPREGNATED MOLYBDENUM OXIDE-ALUMINA CATALYST PROMOTED WITH BETWEEN 0.6% AND 8% OF SILICA AND BETWEEN 2.5% AND 12% OF ZINC OXIDE, THE AMOUNT OF MOLYBDENUM BEING IN EXCESS OF THE ZINC IN THE CATALYST.
Claim 2
Dependent Claim
123 words
THE PROCESS FOR THE SUBSTANTIALLY CONTINUOUS UPGRADING OF MOTOR FUELS BY CATALYTIC TREATMENT WITH HYDROGEN WHICH COMPRISES SUBSTANTIALLY CONTINUOUSLY VAPORIZING A STRAIGHT-RUN GASOLINE FRACTION BOILING PREDOMINATELY WITHIN THE RANGE OF 185*F. AND 500*F. AND HAVING A CLEAR F-2 OCTANE NUMBER BELOW 48, SUBSTANTIALLY CONTINUOUSLY CONTACTING THE VAPORIZED GASOLINE IN THE PRESENCE OF AT LEAST 2500 CU. FT. PER BARREL OF HYDROGEN AT A LIQUID HOURLY SPACE VELOCITY BETWEEN 0.5 AND 3. A TEMPERATURE BETWEEN 825*F. AND 1025*F., AND A PRESSURE OF AT LEAST 500 P. S. I. G., WITH AN IMPREGNATED MOLYBDENUM OXIDE-ALUMINA CATALYST PROMOTED WITH BETWEEN 0.6% AND 8% OF SILICA AND BETWEEN 2.5% AND 12% OF ZINC OXIDE, THE AMOUNT OF MOLYBDENUM BEING IN EXCESS OF THE ZINC IN THE CATALYST.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |