US2529152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extraction of insulin
Assignee: SmithKline Beecham Corp
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Filing: 1946-12-06
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Granted: 1950-11-07
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Expires: 1966-12-06
Abstract
No abstract record available.
Inventors
- 👤 Grant Reginald Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:13
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/575; C07K14/62; C07K14/625; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/843; Y10S530/845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN THE MANUFACTURE OF INSULIN, THE PROCESS COMPRISING ACIDIFYING AN AQUEOUS-ALCOHOLIC EXTRACT OF PANCREAS GLAND CONTAINING FROM 60 TO 70% BY 6 WEIGHT OF ALCOHOL, REDUCING THE ALCOHOLIC STRENGTH OF THE EXTRACT TO ABOUT 20 TO 40% BY WEIGHT OF ALCOHOL, ADJUSTING THE PH OF THE EXTRACT TO ABOUT 4 TO 6Y, SEPARATING FROM THE EXTRACT A FATLIKE FRACTION WHICH IS NO LONGER SOLUBLE THEREIN UNDER THE CONDITIONS SPECIFIED, AND FURTHER TREATING THE REMAINING LIQUOR TO RECOVER INSULIN AND ALCOHOL THEREFROM.
Claim 2
Dependent Claim
81 words
IN THE MANUFACTURE OF INSULIN, THE PROCESS COMPRISING ACIDIFYING AN AQUEOUS-ALCOHOLIC EXTRACT OF PANCREAS GLAND CONTAINING FROM 60 TO 70% BY 6 WEIGHT OF ALCOHOL, REDUCING THE ALCOHOLIC STRENGTH OF THE EXTRACT TO ABOUT 20 TO 40% BY WEIGHT OF ALCOHOL, ADJUSTING THE PH OF THE EXTRACT TO ABOUT 4 TO 6Y, SEPARATING FROM THE EXTRACT A FATLIKE FRACTION WHICH IS NO LONGER SOLUBLE THEREIN UNDER THE CONDITIONS SPECIFIED, AND FURTHER TREATING THE REMAINING LIQUOR TO RECOVER INSULIN AND ALCOHOL THEREFROM.
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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |