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US3681199A Expired / Lapsed US ⏱️ 0.0 years remaining

Process of producing yeast of low plasticity and high solids content

Assignee: Patentauswertung Vogelbusch GmbH
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Filing: 1970-04-01
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Granted: 1972-08-01
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Expires: 1990-04-01
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Abstract

Abstract YEAST OF INCREASED DRY SOLID CONTENT, REDUCED PLASTICITY, AND HIGH STABILITY IS PRODUCED BY ALLOWING UREA OR GLYCEROL TO ACT UPON A YEAST SUSPENSION FOR A SHORT PERIOD OF TIME SO AS TO CAUSE EFFUSION OF INTRACELLULAR WATER FROM THE YEAST CELLS AND TO YIELD CYTORRHYZED, I.E. SHRUNKEN CELLS. IMMEDIATELY THEREUPON THE CYTORRHYZED YEAST IS FILTERED ON SUCTION FILTERS, FILTER PRESSES, CENTRIFUGES, OR OTHER CONVENTIONAL SEPARATING DEVICES. THE FILTERED YEAST IS ALLOWED TO STAND TO CAUSE RE-ABSORPTION OF EXTRACELLULAR WATER CONTAINING RESIDUAL UREA OR GLYCEROL AND THUS YIELDS YEAST OF THE ABOVE MENTIONED IMPROVED PROPERTIES. OTHER OSMOTICALLY ACTIVE COMPOUNDS ARE NOT SUITABLE FOR THIS PROCESS AND DO NOT CAUSE REDUCTION OF THE PLASTICITY.

Inventors

  • 👤 Karl Rokitansky

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 12:06
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/04

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-01 1976-01-31 1976-08-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-01 1980-01-31 1980-08-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-01 1984-01-31 1984-08-01 $7700.00 Window Closed / Lapsed

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