US2922748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autolysis process and product
Assignee: Sensient Technologies Corp
•
Filing: 1956-05-15
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Granted: 1960-01-26
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Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Henry J Peppler
- 👤 John A Thorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:29
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2405; C12N9/2408; Y; Y10; Y10S; Y10S435/00; Y10S435/814
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS OF INCREASING THE CONCENTRATION OF INVERTASE IN YEAST CELLULAR MATERIAL WHICH COMPRISES CONTACTING A MASS OF INVERTASE-CONTAINING YEAST CELLS WITH FROM 0.375 TO 7.5 PERCENT BY WEIGHT OF CHLOROFORM IN AN AQUEOUS SUSPENSION WHEREIN THE CONCENTRATION OF YEAST CELLS IN THE MIXTURE IS BETWEEN ABOUT 5 PERCENT AND 25 PERCENT ON A DRY WEIGHT BASIS, MAINTAINING A TEMPERATURE OF FROM ABOUT 10 TO ABOUT 55*C., FOR A PERIOD OF TIME SUFFICIENT TO INCREASE THE INVERTASE CONTENT OF SAID YEAST CELLS BY AT LEAST ABOUT 20% ON A DRY WEIGHT BASIS, SEPARATING THE RESULTING SUBSTANTIALLY INVERTASE-FREE SOLUTION CONTAINING WATER, CHLOROFORM, AND SOLUBILIZED YEAST SOLIDS FROM THE RESIDUAL SOLID INVERTASE-CONTAINING CELLULAR MATERIAL AND DRYING SAID RESIDUE OF INVERTASECONTAINING CELLS.
Claim 2
Dependent Claim
119 words
A PROCESS OF INCREASING THE CONCENTRATION OF INVERTASE IN YEAST CELLULAR MATERIAL WHICH COMPRISES CONTACTING A MASS OF INVERTASE-CONTAINING YEAST CELLS WITH FROM 0.375 TO 7.5 PERCENT BY WEIGHT OF CHLOROFORM IN AN AQUEOUS SUSPENSION WHEREIN THE CONCENTRATION OF YEAST CELLS IN THE MIXTURE IS BETWEEN ABOUT 5 PERCENT AND 25 PERCENT ON A DRY WEIGHT BASIS, MAINTAINING A TEMPERATURE OF FROM ABOUT 10 TO ABOUT 55*C., FOR A PERIOD OF TIME SUFFICIENT TO INCREASE THE INVERTASE CONTENT OF SAID YEAST CELLS BY AT LEAST ABOUT 20% ON A DRY WEIGHT BASIS, SEPARATING THE RESULTING SUBSTANTIALLY INVERTASE-FREE SOLUTION CONTAINING WATER, CHLOROFORM, AND SOLUBILIZED YEAST SOLIDS FROM THE RESIDUAL SOLID INVERTASE-CONTAINING CELLULAR MATERIAL AND DRYING SAID RESIDUE OF INVERTASECONTAINING CELLS.
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) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |