US2650931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing metallic contaminants from hydrogenated oils
Assignee: De Laval Separator Co
•
Filing: 1951-03-30
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Granted: 1953-09-01
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Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Dron
- 👤 Jr Frank A Lindsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:07
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD FOR TREATING HYDROGENATED VEGETABLE OR ANIMAL OIL TO REMOVE THEREFROM METALLIC CONTAMINANTS RESULTING FROM THE HYDROGENATION, WHICH COMPRISES FEEDING THE OIL THROUGH A FILTERING ZONE TO REMOVE CATALYST MATERIAL REMAINING IN THE OIL AFTER THE HYDROGENATING OPERATION, PASSING THE FILTERED OIL FROM SAID ZONE THROUGH A MIXING ZONE AND THERE MIXING IT INTIMATELY WITH AN AQUEOUS SOLUTION OF AN ACID IN WHICH THE METALLIC CONTAMINANTS ARE SOLUBLE, FEEDING THE MIXTURE FROM SAID LAST ZONE TO A LOCUS OF CENTRIFUGAL FORCE AND THERE SEPARATING IT INTO AN INNER LAYER COMPRISING CLEANED OIL AND AN OUTER LAYER COMPRISING AN AQUEOUS ACID SOLUTION IN WHICH THE METALLIC CONTAMINANTS ARE DISSOLVED OR SUSPENDED, AND CONTINUOUSLY AND SEPARATELY DISCHARGING OIL AND ACID SOLUTION FROM THE RESPECTIVE LAYERS AND SAID LOCUS.
Claim 2
Independent Claim
127 words
A METHOD FOR TREATING HYDROGENATED VEGETABLE OR ANIMAL OIL TO REMOVE THEREFROM METALLIC CONTAMINANTS RESULTING FROM THE HYDROGENATION, WHICH COMPRISES FEEDING THE OIL THROUGH A FILTERING ZONE TO REMOVE CATALYST MATERIAL REMAINING IN THE OIL AFTER THE HYDROGENATING OPERATION, PASSING THE FILTERED OIL FROM SAID ZONE THROUGH A MIXING ZONE AND THERE MIXING IT INTIMATELY WITH AN AQUEOUS SOLUTION OF AN ACID IN WHICH THE METALLIC CONTAMINANTS ARE SOLUBLE, FEEDING THE MIXTURE FROM SAID LAST ZONE TO A LOCUS OF CENTRIFUGAL FORCE AND THERE SEPARATING IT INTO AN INNER LAYER COMPRISING CLEANED OIL AND AN OUTER LAYER COMPRISING AN AQUEOUS ACID SOLUTION IN WHICH THE METALLIC CONTAMINANTS ARE DISSOLVED OR SUSPENDED, AND CONTINUOUSLY AND SEPARATELY DISCHARGING OIL AND ACID SOLUTION FROM THE RESPECTIVE LAYERS AND SAID LOCUS.
References Cited (Backward Citations)
US2207712A
Cited
US2547014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |