US2803585A
Expired / Lapsed
US
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Method of recovering broteolytic pancreas enzymes from mammalian pancreas glands subsequent to insulin removal
Assignee: Novo Terapeutisk Laboratorium AS
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Filing: 1951-01-03
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Granted: 1957-08-20
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Expires: 1971-01-03
Abstract
No abstract record available.
Inventors
- 👤 Frederiksen Svend Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:00
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/94; Y; Y10; Y10S; Y10S435/00; Y10S435/803; Y10S530/00; Y10S530/827; Y10S530/843; Y10S530/845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD OF RECOVERING PROTEOLYTIC ENZYMES FROM MAMMALIAN PANCREASE GLANDS, WHICH COMPRISES ADDING WATER TO THE RESIDUAL GLAND MATERIAL RESULTING FROM THE TREATMENT OF MINCED PANCREAS GLAND WITH A CONVENTIONAL INSULIN EXTRACTING CONCENTRATION OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHYL ALCOHOL, ETHYL ALCOHOL, AND ACETONE ACIDIFIED WITH A MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND PHOSPHORIC ACID CREATE AN ACID MILLIEU HAVING A PH BELOW 7, THEREBY BRINGING THE PROTEOLYTIC ENZYMES CONTAINED IN THE RESIDUAL GLAND MATERIAL INTO SOLUTION IN AN ACID MILLIEU, AND RECOVERING THE DISSOLVED ENZYMES.
Claim 2
Independent Claim
95 words
A METHOD OF RECOVERING PROTEOLYTIC ENZYMES FROM MAMMALIAN PANCREASE GLANDS, WHICH COMPRISES ADDING WATER TO THE RESIDUAL GLAND MATERIAL RESULTING FROM THE TREATMENT OF MINCED PANCREAS GLAND WITH A CONVENTIONAL INSULIN EXTRACTING CONCENTRATION OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHYL ALCOHOL, ETHYL ALCOHOL, AND ACETONE ACIDIFIED WITH A MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND PHOSPHORIC ACID CREATE AN ACID MILLIEU HAVING A PH BELOW 7, THEREBY BRINGING THE PROTEOLYTIC ENZYMES CONTAINED IN THE RESIDUAL GLAND MATERIAL INTO SOLUTION IN AN ACID MILLIEU, AND RECOVERING THE DISSOLVED ENZYMES.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |