Patent US3288704A successfully refreshed from Google Patents.
US3288704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auto-regeneration of hydrofining catalysts
Assignee: Universal Oil Products Co
•
Filing: 1963-12-26
•
Granted: 1966-11-29
•
Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Mark J O'hara
- 👤 John G Gatsis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:01
CPC Classifications
B; B01; B01J; B01J38/00; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR REGENERATING AN ADSORPTIVE HYDROGENATION CATALYST CONTAINING ASPHALTENES IN AN AMOUNT OF FROM ABOUT 35% TO ABOUT 50% BY WEIGHT, WHICH COMPRISES HEATING SAID CATALYST TO A TEMPERATURE LEVEL ABOVE THAT AT WHICH THERMAL CRACKING OF ASPHALTENES IS EFFECTED AND CRACKING SAID ASPHALTENES TO PRODUCE NORMALLY LIQUID HYDROCARBONS THEREFROM AND TO REGENERATE THE CATALYST, MAINTAINING THE CATALYST AT SAID TEMPERATURE LEVEL UNTIL THE ASPHALTENES ON THE CATALYST ARE CONVERTED AND REMOVED FROM THE CATALYST, AND RECOVERING THE RESULTANT REGENERATED ASPHALTENE-FREE CATALYST.
Claim 2
Dependent Claim
83 words
A PROCESS FOR REGENERATING AN ADSORPTIVE HYDROGENATION CATALYST CONTAINING ASPHALTENES IN AN AMOUNT OF FROM ABOUT 35% TO ABOUT 50% BY WEIGHT, WHICH COMPRISES HEATING SAID CATALYST TO A TEMPERATURE LEVEL ABOVE THAT AT WHICH THERMAL CRACKING OF ASPHALTENES IS EFFECTED AND CRACKING SAID ASPHALTENES TO PRODUCE NORMALLY LIQUID HYDROCARBONS THEREFROM AND TO REGENERATE THE CATALYST, MAINTAINING THE CATALYST AT SAID TEMPERATURE LEVEL UNTIL THE ASPHALTENES ON THE CATALYST ARE CONVERTED AND REMOVED FROM THE CATALYST, AND RECOVERING THE RESULTANT REGENERATED ASPHALTENE-FREE CATALYST.
References Cited (Backward Citations)
US2737477A
Cited
US2903413A
Cited
US2985580A
Cited
US3113097A
Cited
US3053755A
Cited
US3169918A
Cited
US3215618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |