US3955004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glyceride oil treatment with oxide and bleaching earth
Assignee: Lever Brothers Co
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Filing: 1974-08-16
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Granted: 1976-05-04
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Expires: 1994-08-16
Abstract
Abstract The storage properties of edible oils are improved by first contacting the oil, in solution in a non-polar solvent, with a metal or metalloid oxide adsorbent in a column, and subsequently treating the oil with a bleaching earth after the solvent has been removed.
Inventors
- 👤 Hans Joerg Strauss
- 👤 Achintya Kumar Sen Gupta
- 👤 Johannes Erich Rost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:14
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/10; C11B3/001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
A process for treating edible glyceride oil to improve its colour and its storage properties, in which the edible glyceride oil, in solution in a nonpolar solvent, said solution containing from 10-95% by weight of the solvent, is first contacted at a temperature between 0-60°C with a metal oxide or metalloid oxide adsorbent with an average pore size of between 30-2000 A selected from the group consisting of silicas and aluminas and mixtures thereof in a column containing the adsorbent, in a ratio of oil to adsorbent of 0.3:1 to 20:1, and the oil is subsequently treated with a bleaching earth after removal of the solvent from the oil.
Claim 2
Dependent Claim
109 words
A process for treating edible glyceride oil to improve its colour and its storage properties, in which the edible glyceride oil, in solution in a nonpolar solvent, said solution containing from 10-95% by weight of the solvent, is first contacted at a temperature between 0-60°C with a metal oxide or metalloid oxide adsorbent with an average pore size of between 30-2000 A selected from the group consisting of silicas and aluminas and mixtures thereof in a column containing the adsorbent, in a ratio of oil to adsorbent of 0.3:1 to 20:1, and the oil is subsequently treated with a bleaching earth after removal of the solvent from the oil.
Claim 3
Dependent Claim
17 words
A process according to claim 1, in which the oil is further subjected to a deodorizing treatment.
Claim 4
Dependent Claim
21 words
A process according to claim 1, in which the oil is subjected to an alkali refining before treatment with the adsorbent.
Claim 5
Dependent Claim
21 words
A process according to claim 1, in which the oil is an untreated crude oil and the adsorbent is silica gel.
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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |