US3260654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of a pancreas extract having a high proteolytic activity
Assignee: Ormonoterapia Richter SpA
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Filing: 1964-03-18
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Granted: 1966-07-12
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Expires: 1984-03-18
Abstract
No abstract record available.
Inventors
- 👤 Toccaceli Nazzareno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:41
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6421; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/816
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS FOR THE PREPARATION OF AN EXTRACT HAVING HIGH PROTEOLYTIC ACTIVITY FROM A MAMMAL PANCREAS, COMPRISING: (A) ACTIVATING SAID PANCREAS THROUGH AUTOLYSIS AT A PH FROM ABOUT 5.5 TO ABOUT 6.5 AND A TEMPERATURE FROM ABOUT 0*C. TO ABOUT + 10*C. IN THE PRESENCE OF A PRESERVATIVE SELECTED FROM THE GROUP CONSISTING OF THYMOL, TOLUENE, CHLOROFORM, SODIUM BISULFITE, BENZYL ALCOHOL PENOL, AND MIXTURE THEREOF (B) EXTRACTING PROTEOLYTIC ENZYMES WITH WATER AT A PH FROM ABOUT 3.5 TO ABOUT 4.5, FROM THE PRODUCT FORMED IN (A); (C) REMOVING FIBROUS MATTER FROM THE PRODUCT FORMED IN (B); (D) PRECIPITATING ENZYMES PRESENT IN THE SUBSTANTIALLY FIBROUS-FREE PRODUCT OBTAINED IN (C); AND (E) VACUUM DRYING THE PRECI A TEMPERATURE OF LESS THAN ABOUT +30*C.
Claim 2
Dependent Claim
121 words
A PROCESS FOR THE PREPARATION OF AN EXTRACT HAVING HIGH PROTEOLYTIC ACTIVITY FROM A MAMMAL PANCREAS, COMPRISING: (A) ACTIVATING SAID PANCREAS THROUGH AUTOLYSIS AT A PH FROM ABOUT 5.5 TO ABOUT 6.5 AND A TEMPERATURE FROM ABOUT 0*C. TO ABOUT + 10*C. IN THE PRESENCE OF A PRESERVATIVE SELECTED FROM THE GROUP CONSISTING OF THYMOL, TOLUENE, CHLOROFORM, SODIUM BISULFITE, BENZYL ALCOHOL PENOL, AND MIXTURE THEREOF (B) EXTRACTING PROTEOLYTIC ENZYMES WITH WATER AT A PH FROM ABOUT 3.5 TO ABOUT 4.5, FROM THE PRODUCT FORMED IN (A); (C) REMOVING FIBROUS MATTER FROM THE PRODUCT FORMED IN (B); (D) PRECIPITATING ENZYMES PRESENT IN THE SUBSTANTIALLY FIBROUS-FREE PRODUCT OBTAINED IN (C); AND (E) VACUUM DRYING THE PRECI A TEMPERATURE OF LESS THAN ABOUT +30*C.
References Cited (Backward Citations)
US2751329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |