Patent US3687682A successfully refreshed from Google Patents.
US3687682A
Expired / Lapsed
US
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Process for the treatment of liquid whey
Assignee: NORTHLAND FOODS COOPERATIVE A WISCONSIN COOPERATIVE ASSOCIATION
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Filing: 1970-08-05
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Granted: 1972-08-29
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Expires: 1990-08-05
Abstract
Abstract HIGH DEGREES OF DEMINERALIZATION OF LIQUID WHEY WITHOUT DENATURATION OF WHEY PROTIEN ARE ATTAINED BY FIRST DEIONIZING LIQUID WHEY OF LESS THAN 20 PERCENT SOLIDS CONTENT TO EFFECT A REDUCTION OF THE ASH CONTENT IN EXCESS OF 65 PERCENT FOLLOWED BY CONCENTRATION OF THE DEMINERALIZED WHEY TO A SOLIDS CONTENT OF MORE THAN 50 PERCENT AND REMOVAL OF A CRYSTALLIZED LACTROSE, THE DEIONIZATON BEING CARRIED OUT IN A CELL CONTAINING CATION MEMBRANES AND NEUTRAL MEMBRANES.
Inventors
- 👤 John R Scheder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
A; A23; A23C; A23C9/00; A23C9/14; A23C9/144
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |