US2771480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of glyceride oils by means of ion-exchange resins
Assignee: Rohm and Haas Co
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Filing: 1953-07-29
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Granted: 1956-11-20
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Expires: 1973-07-29
Abstract
No abstract record available.
Inventors
- 👤 Martin G Chasanov
- 👤 Kunin Robert
- 👤 Mattikow Morris
- 👤 Benjamin H Thurman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:09
CPC Classifications
C; C11; C11D; C11D19/00; B; B01; B01J; B01J41/00; B01J41/04; B01J41/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE PROCESS OF REFINING A GLYCERIDE OIL CONTAINING FREE FATTY ACIDS AND COLOR-BODIES WHICH COMPRISES BRINGING SAID OIL IN CONTACT WITH PARTICLES OF A STRONGLY BASIC ANION-EXCHANGE RESIN CONTAINING QUATERNARY AMMONIUM HYDROXIDE GROUPS, ADSORBING SAID FATTY ACIDS AND SAID COLOR-BODIES ON SAID RESIN, SEPARATING THE OIL AND RESIN, REMOVING ADSORBED COLOR-BODIES FORM SAID RESIN HY TREATING THE RESIN WITH A SOLUTION OF AN OXIDIZING AGENT WHICH IS A MEMBER OF THE CLASS CONSISTING OF AQUEOUS SOLUTIONS OF INORGANIC HYPOCHLORITES AND OF HYDROGEN PEROXIDE AND REMOVING SAID ADSORBED FATTY ACIDS FROM SAID RESIN BY TREATING THE RESIN WITH A SOLUTION OF A CAUSTIC ALKALI.
Claim 2
Dependent Claim
103 words
THE PROCESS OF REFINING A GLYCERIDE OIL CONTAINING FREE FATTY ACIDS AND COLOR-BODIES WHICH COMPRISES BRINGING SAID OIL IN CONTACT WITH PARTICLES OF A STRONGLY BASIC ANION-EXCHANGE RESIN CONTAINING QUATERNARY AMMONIUM HYDROXIDE GROUPS, ADSORBING SAID FATTY ACIDS AND SAID COLOR-BODIES ON SAID RESIN, SEPARATING THE OIL AND RESIN, REMOVING ADSORBED COLOR-BODIES FORM SAID RESIN HY TREATING THE RESIN WITH A SOLUTION OF AN OXIDIZING AGENT WHICH IS A MEMBER OF THE CLASS CONSISTING OF AQUEOUS SOLUTIONS OF INORGANIC HYPOCHLORITES AND OF HYDROGEN PEROXIDE AND REMOVING SAID ADSORBED FATTY ACIDS FROM SAID RESIN BY TREATING THE RESIN WITH A SOLUTION OF A CAUSTIC ALKALI.
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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |