US3345389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of fatty materials
Assignee: Emery Oleochemicals LLC
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Filing: 1961-09-26
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Granted: 1967-10-03
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Karl T Zilch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:00
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0008; C11B7/0033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE SEPARATION OF MATERIALS SELECTED FROM THE GROUP CONSISTING OF HIGHER FATTY ACIDS AND THE GLYCERIDES OF SAID ACIDS, SAID MATERIAL HAVING DIFFERENT DEGREES OF UNSATURATION, WHICH COMPRISES DISSOLVING THE FATTY MATERIALS IN 2-NITROPROPANE, COOLING THE SOLUTION TO PRECIPITATE A PORTION OF THE MORE SATURATED CONSTITUENTS, FILTERING OFF SAID PRECIPITATE, AND RECOVERING THE FATTY MATERIALS FROM THE PRECIPITATE BY EVAPORATION OF THE SOLVENT PERSENT THEREIN.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE SEPARATION OF MATERIALS SELECTED FROM THE GROUP CONSISTING OF HIGHER FATTY ACIDS AND THE GLYCERIDES OF SAID ACIDS, SAID MATERIAL HAVING DIFFERENT DEGREES OF UNSATURATION, WHICH COMPRISES DISSOLVING THE FATTY MATERIALS IN 2-NITROPROPANE, COOLING THE SOLUTION TO PRECIPITATE A PORTION OF THE MORE SATURATED CONSTITUENTS, FILTERING OFF SAID PRECIPITATE, AND RECOVERING THE FATTY MATERIALS FROM THE PRECIPITATE BY EVAPORATION OF THE SOLVENT PERSENT THEREIN.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |