US3205180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of lubricating oils
Assignee: BP PLC
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Filing: 1961-11-16
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Granted: 1965-09-07
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Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Demeester Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; C; C10; C10G; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR PREPARING A CATALYSST FOR USE IN THE HYDROGENATING REFINING OF LUBRICATING OILS, COMPRISING FIRST IMPREGNATING A CATALYST SUPPORT CONSISTING OF ACTIVATED ALUMINA, SAID ALUMINA HAVING BEEN PREVIOUSLY CALCINED, WITH A NON-ALKALINE SOLUTION OF FERRRIC NITRATE, DRYING AND CALCINING, THEREAFTER IMPREGNATING THE SUPPORT WITH AN AMMONIACAL SOLUTION OF AMMONIUM MOLYBDATE, DRYING AND CALLCINING AND THEREAFTER IMPREGNATING WITH A SOLUTION OF COBALT NITRATE, DRYING AND CALCINING.
Claim 2
Dependent Claim
67 words
A PROCESS FOR PREPARING A CATALYSST FOR USE IN THE HYDROGENATING REFINING OF LUBRICATING OILS, COMPRISING FIRST IMPREGNATING A CATALYST SUPPORT CONSISTING OF ACTIVATED ALUMINA, SAID ALUMINA HAVING BEEN PREVIOUSLY CALCINED, WITH A NON-ALKALINE SOLUTION OF FERRRIC NITRATE, DRYING AND CALCINING, THEREAFTER IMPREGNATING THE SUPPORT WITH AN AMMONIACAL SOLUTION OF AMMONIUM MOLYBDATE, DRYING AND CALLCINING AND THEREAFTER IMPREGNATING WITH A SOLUTION OF COBALT NITRATE, DRYING AND CALCINING.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |