Patent US2663666A successfully refreshed from Google Patents.
US2663666A
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Process of preparing crystalline insulin from acid alcoholic extracts of pancreas glands
Assignee: Organon NV
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Filing: 1950-03-15
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Granted: 1953-12-22
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Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 Homan Jan Daniel Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:35
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
65 words
IN A PRCOESS FOR PREPARING CRYSTALLINE INSULIN FROM CLEAR TO OPALESCENT ACID ALCOHOLIC EXTRACTS OF PANCREAS GLENDS, THE STEPS COMPRISING REDUCING THE ALCOHOL CONTENT OF SAID EXTRACT TO NOT LESS THAN 47% AND NOT MORE THAN 52%, ADJUSTING THE PH VALUE OF SAID EXTRACT TO BETWEEN ABOUT 4.0 AND ABOUT 5.5 THEREBY PRECIPITATING THE REDUCING MATERIAL PRESSURE IN SAID EXTRACT AND REMOVING THE FORMED PRECIPITATE.
Claim 2
Dependent Claim
65 words
IN A PRCOESS FOR PREPARING CRYSTALLINE INSULIN FROM CLEAR TO OPALESCENT ACID ALCOHOLIC EXTRACTS OF PANCREAS GLENDS, THE STEPS COMPRISING REDUCING THE ALCOHOL CONTENT OF SAID EXTRACT TO NOT LESS THAN 47% AND NOT MORE THAN 52%, ADJUSTING THE PH VALUE OF SAID EXTRACT TO BETWEEN ABOUT 4.0 AND ABOUT 5.5 THEREBY PRECIPITATING THE REDUCING MATERIAL PRESSURE IN SAID EXTRACT AND REMOVING THE FORMED PRECIPITATE.
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) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |