Patent US2102891A successfully refreshed from Google Patents.
US2835682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterol recovery process
Assignee: JBS USA LLC
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Filing: 1955-08-08
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Granted: 1958-05-20
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Charles S Steiner
- 👤 Fritz Earle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:00
CPC Classifications
C; C07; C07J; C07J9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN A PROCESS FOR ISOLATION OF STEROLS, THE STEPS WHICH COMPRISE: FRACTIONATION OF A STEROL-CONTAINING COMPOSITION IN A LIQUID, NORMALLY GASEOUS HYDROCARBON TO OBTAIN A STEROL-ENRICHED FRACTION; SAPONIFICATION OF SAID STEROLENRICHED FRACTION IN AN ALCOHOLIC ALKALI SOLUTION; AND CRYSTALLIZATION OF THE STEROLS BY ADDING ABOUT 10-30% WATER AND COOLING THE MIXTURE.
Claim 2
Dependent Claim
51 words
IN A PROCESS FOR ISOLATION OF STEROLS, THE STEPS WHICH COMPRISE: FRACTIONATION OF A STEROL-CONTAINING COMPOSITION IN A LIQUID, NORMALLY GASEOUS HYDROCARBON TO OBTAIN A STEROL-ENRICHED FRACTION; SAPONIFICATION OF SAID STEROLENRICHED FRACTION IN AN ALCOHOLIC ALKALI SOLUTION; AND CRYSTALLIZATION OF THE STEROLS BY ADDING ABOUT 10-30% WATER AND COOLING THE MIXTURE.
References Cited (Backward Citations)
US2296794A
Cited
US2528482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |