US3053760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing bright stocks by hydrogenation
Assignee: Gulf Research and Development Co
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Filing: 1960-03-04
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Granted: 1962-09-11
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Expires: 1980-03-04
Abstract
No abstract record available.
Inventors
- 👤 Alfred M Henke
- 👤 Joseph B Mckinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:26
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/04; C10G67/0454; C10G67/0463; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE PROCESS FOR PREPARING AN IMPROVED BRIGHT STOCK WHICH COMPRISES IN COMBINATION CONTACTING A DEASPHALTED RESIDUAL LUBE OI STOCK WHICH CONTAINS ABOUT THE SAME AMOUNT OF AROMATIC HYDROCARBONS AS THE UN-DEASPHALTED STOCK WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST DEPOSITED UPON A CARRIER COMPRISING ESSENTIALLY ETA ALUMINA AT A TEMPERATURE BETWEEN ABOUT 500* AND 775*F., AT A PRESSURE ABOVE 2,000 AND BELOW ABOUT 3,500 P.S.I., AT A SPACE VELOCITY OF BETWEEN ABOUT 300 AND 5,000 AND AT A HYDROGEN RATE OF BETWEEN ABOUT 300 AND 5,000 S.C.F./BBL. OF FEED, SAID CONDITIONS RESULTING IN AVOIDANCE OF SUBSTANTIAL SPLITTING REACTIONS AND A HIGH YIELD OF REFINED BRIGHT STOCK HAVING A RELATIVELY LOW CARBON RESIDUE.
Claim 2
Dependent Claim
114 words
THE PROCESS FOR PREPARING AN IMPROVED BRIGHT STOCK WHICH COMPRISES IN COMBINATION CONTACTING A DEASPHALTED RESIDUAL LUBE OI STOCK WHICH CONTAINS ABOUT THE SAME AMOUNT OF AROMATIC HYDROCARBONS AS THE UN-DEASPHALTED STOCK WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST DEPOSITED UPON A CARRIER COMPRISING ESSENTIALLY ETA ALUMINA AT A TEMPERATURE BETWEEN ABOUT 500* AND 775*F., AT A PRESSURE ABOVE 2,000 AND BELOW ABOUT 3,500 P.S.I., AT A SPACE VELOCITY OF BETWEEN ABOUT 300 AND 5,000 AND AT A HYDROGEN RATE OF BETWEEN ABOUT 300 AND 5,000 S.C.F./BBL. OF FEED, SAID CONDITIONS RESULTING IN AVOIDANCE OF SUBSTANTIAL SPLITTING REACTIONS AND A HIGH YIELD OF REFINED BRIGHT STOCK HAVING A RELATIVELY LOW CARBON RESIDUE.
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |