Patent US2561812A successfully refreshed from Google Patents.
US2561812A
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Recovery of soluble substances from filter-press cakes
Assignee: Pabst Brewing Co
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Filing: 1950-07-11
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Granted: 1951-07-24
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Expires: 1970-07-11
Abstract
No abstract record available.
Inventors
- 👤 Samuel A Morell
- 👤 Shovers John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:58
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR THE RECOVERY OF SOLUBLE SOLIDS FROM FILTER CAKES WHICH COMPRISES INCORPORATING WITH THE WASH LIQUOR USED FOR SPARGING SAID PRESS CAKES A SUBSTANTIALLY INERT SUBSTANCE WHICH IS INSOLUBLE IN THE WASH LIQUOR AND SWELLS TO A GELATINOUS FORM, THE QUANTITY OF SAID INERT SUBSTANCE BEING SUFFICIENT TO DECREASE THE PRESSURE DROP OF THE WASH LIQUOR THROUGH THE FILTER CAKE BUT INSUFFICIENT TO CAUSE THE FORMATION OF A SOLID GEL
Claim 2
Dependent Claim
72 words
A PROCESS FOR THE RECOVERY OF SOLUBLE SOLIDS FROM FILTER CAKES WHICH COMPRISES INCORPORATING WITH THE WASH LIQUOR USED FOR SPARGING SAID PRESS CAKES A SUBSTANTIALLY INERT SUBSTANCE WHICH IS INSOLUBLE IN THE WASH LIQUOR AND SWELLS TO A GELATINOUS FORM, THE QUANTITY OF SAID INERT SUBSTANCE BEING SUFFICIENT TO DECREASE THE PRESSURE DROP OF THE WASH LIQUOR THROUGH THE FILTER CAKE BUT INSUFFICIENT TO CAUSE THE FORMATION OF A SOLID GEL
References Cited (Backward Citations)
US2261923A
Cited
US2254241A
Cited
US2261924A
Cited
US2261917A
Cited
US2307326A
Cited
US2261920A
Cited
US2261922A
Cited
US2261918A
Cited
US2450683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |