US2674560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of insulin from pancreas glands
Assignee: Armour and Co
•
Filing: 1951-08-29
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Granted: 1954-04-06
•
Expires: 1971-08-29
Abstract
No abstract record available.
Inventors
- 👤 Loyal C Maxwell
- 👤 William P Hinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:52
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
45 words
A PROCESS FOR OBTAINING INSULIN FROM PANCREAS GLANDS, COMPRISING SUBJECTING SAID GLANS TO EXTRACTION AT A PH OF 2.5 TO 4.0 WITH A MIXTURE OF AXALIC ACID AND AN ORGANIG SOLVENT FOR INSULIN WHICH IS COMPATIBLE WITH OXALIC ACID, AND RECOVERING INSULIN IN THE EXTRACT.
Claim 2
Dependent Claim
45 words
A PROCESS FOR OBTAINING INSULIN FROM PANCREAS GLANDS, COMPRISING SUBJECTING SAID GLANS TO EXTRACTION AT A PH OF 2.5 TO 4.0 WITH A MIXTURE OF AXALIC ACID AND AN ORGANIG SOLVENT FOR INSULIN WHICH IS COMPATIBLE WITH OXALIC ACID, AND RECOVERING INSULIN IN THE EXTRACT.
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |