US2904439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yeast extraction
Assignee: Sensient Technologies Corp
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Filing: 1956-01-25
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Granted: 1959-09-15
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Expires: 1976-01-25
Abstract
No abstract record available.
Inventors
- 👤 Elmer J Cooper
- 👤 Henry J Peppler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:56
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/005; C12N1/06; C12N1/063
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
AN ESSENTIALLY NONAUTOLYTIC PROCESS FOR TREATING AND EXTRACTION OF ACTIVE DRY YEAST WHICH COMPRISES EXTRACTING WHOLE CELLS OF A VEABLE ACTIVE DRY YEAST HAVING A MIISTURE CONTENT OF LESS THAN 10% BY AGITATING SAID ACTIVE DRY YEAST WITH WATER AT A TEMPERATURE BELOW ABOUT 60* F. FOR A PERIOD OF UP TO ABOUT THIRTY MINUTED THEREBY TO EXTRACT WATER SOLUBLE INTRACELLULAR MATERIAL CONTAINED IN SAID YEAST CELLS IN AN AMOUNT EQUAL T AT LEAST ABOUT 20% BY WEIGHT OF SAID DRY YEAST, AND RECOVERING SAID AQUEOUS EXTRACT FROM THE RESIDUAL CELLULAR YEAST PRODUCT.
Claim 2
Dependent Claim
93 words
AN ESSENTIALLY NONAUTOLYTIC PROCESS FOR TREATING AND EXTRACTION OF ACTIVE DRY YEAST WHICH COMPRISES EXTRACTING WHOLE CELLS OF A VEABLE ACTIVE DRY YEAST HAVING A MIISTURE CONTENT OF LESS THAN 10% BY AGITATING SAID ACTIVE DRY YEAST WITH WATER AT A TEMPERATURE BELOW ABOUT 60* F. FOR A PERIOD OF UP TO ABOUT THIRTY MINUTED THEREBY TO EXTRACT WATER SOLUBLE INTRACELLULAR MATERIAL CONTAINED IN SAID YEAST CELLS IN AN AMOUNT EQUAL T AT LEAST ABOUT 20% BY WEIGHT OF SAID DRY YEAST, AND RECOVERING SAID AQUEOUS EXTRACT FROM THE RESIDUAL CELLULAR YEAST PRODUCT.
Claim 3
Dependent Claim
75 words
AN ESSENTIALLY NONAUTOLYTIC PROCESS FOR EXTRACTION OF TREHALOSE FROM ACTIVE DRY YEAST WHICH COMPRISES EXTRACTING WHOLE CELLS OF A VIABLE ACTIVE DRY YEAST HAVING A MOISTURE CONTENT OF LESS THAN 10% BY AGITATING WITH WATER AT A ATEMPERATURE BELOW ABOUT 60* F. FOR A PERIOD OF UP TO ABOUT THIRTY MINUTES TO NEXTRACT TREHALOSE AS A WATER SOLUBLE INTRACELLULAR EXTRACT FROM SAID YEAST CELLS, AND RECOVERING SAID AQUEOUS EXTRACT FROM THE RESIDUAL CELLULAR YEAST PRODUCT.
Claim 4
Dependent Claim
75 words
AN ESSENTIALLY NONAUTOLYTIC PROCESS FOR EXTRACTION OF TREHALOSE FROM ACTIVE DRY YEAST WHICH COMPRISES EXTRACTING WHOLE CELLS OF A VIABLE ACTIVE DRY YEAST HAVING A MOISTURE CONTENT OF LESS THAN 10% BY AGITATING WITH WATER AT A ATEMPERATURE BELOW ABOUT 60* F. FOR A PERIOD OF UP TO ABOUT THIRTY MINUTES TO NEXTRACT TREHALOSE AS A WATER SOLUBLE INTRACELLULAR EXTRACT FROM SAID YEAST CELLS, AND RECOVERING SAID AQUEOUS EXTRACT FROM THE RESIDUAL CELLULAR YEAST PRODUCT.
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |