US3069323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulin recovery process
Assignee: Armour Pharmaceutical Co
•
Filing: 1959-09-14
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Granted: 1962-12-18
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Expires: 1979-09-14
Abstract
No abstract record available.
Inventors
- 👤 Volini Marguerite
- 👤 Miiton A Mitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:19
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/575; C07K14/62; C07K14/625; B; B01; B01J; B01J47/00; B01J47/014; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/843; Y10S530/845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A PROCESS FOR PREPARING CRYSTALLINE INSULIN WHEREIN PANCREAS TISSUE IS EXTRACTED WITH AN AQUEOUS ACIDIC SOLUTION OF A LOW ALIPHATIC ALCOHOL TO OBTAIN A CRUDE INSULIN EXTRACT, AND WHEREIN SAID CRUDE INSULIN EXTRACT IS SUBJECTED TO PURIFICATION TO OBTAIN CRYSTALLINE INSULIN, THE STEPS OF CONTACTING A SOLUTION OF CRUDE INSULIN, WITH AN AMINOCELLULOSE ANION EXCHANGER AT A PH OF FROM ABOUT 5.5 TO ABOUT 8.0 TO FIX AT LEAST A PORTION OF THE INSULIN ON SAID ANION EXCHANGER, AND CONTACTING THE AMINOCELLULOSE HAVING INSULIN FIXED THERETO WITH AN ELUANT SELECTED FROM THE GROUP CONSISTING OF AN ACID, AT A PH OF FROM ABOUT 1 TO ABOUT 5, AND A BASE, AT A PH OF FROM ABOUT 8.5 TO ABOUT 11, TO ELUTE AT LEAST A PORTION OF THE INSULIN FROM SAID ANION EXCHANGE.
Claim 2
Dependent Claim
134 words
IN A PROCESS FOR PREPARING CRYSTALLINE INSULIN WHEREIN PANCREAS TISSUE IS EXTRACTED WITH AN AQUEOUS ACIDIC SOLUTION OF A LOW ALIPHATIC ALCOHOL TO OBTAIN A CRUDE INSULIN EXTRACT, AND WHEREIN SAID CRUDE INSULIN EXTRACT IS SUBJECTED TO PURIFICATION TO OBTAIN CRYSTALLINE INSULIN, THE STEPS OF CONTACTING A SOLUTION OF CRUDE INSULIN, WITH AN AMINOCELLULOSE ANION EXCHANGER AT A PH OF FROM ABOUT 5.5 TO ABOUT 8.0 TO FIX AT LEAST A PORTION OF THE INSULIN ON SAID ANION EXCHANGER, AND CONTACTING THE AMINOCELLULOSE HAVING INSULIN FIXED THERETO WITH AN ELUANT SELECTED FROM THE GROUP CONSISTING OF AN ACID, AT A PH OF FROM ABOUT 1 TO ABOUT 5, AND A BASE, AT A PH OF FROM ABOUT 8.5 TO ABOUT 11, TO ELUTE AT LEAST A PORTION OF THE INSULIN FROM SAID ANION EXCHANGE.
References Cited (Backward Citations)
US2769747A
Cited
US2878159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |