US2878159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alginic acid purification of insulin
Assignee: APOTEKSVARUCENTRALEN VITRUM APOTEKAREAKTIEBOLAGET
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Filing: 1956-01-30
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Granted: 1959-03-17
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Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jorpes Johan Erik
- 👤 Linden Johan Gunnar Boris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
C; C07; C07K; C07K1/00; C07K1/06; C07K1/08; 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
79 words
IN A PROCESS FOR OBTAINING INSULIN FROM PANCREAS GLANDS COMPRISING EXTRACTING CRUDE INSULIN FROM SAID GLANDS WITH A LOWER ALIPHATIC ALCOHOL ACIDIFIED WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, SULFURIC, ACETIC, CITRIC AND OXALIC ACIDS, THE STEPS COMPRISING CONTACTING THE ALCOHOLIC EXTRACT WITH A ALGANIC ACID TO REMOVE THE INSULIN FROM THE EXTRACT AND ELUTING THE INSULIN FROM THE ALGANIC ACID WITH A DILUTE MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC AND SULPHURIC ACID.
Claim 2
Dependent Claim
79 words
IN A PROCESS FOR OBTAINING INSULIN FROM PANCREAS GLANDS COMPRISING EXTRACTING CRUDE INSULIN FROM SAID GLANDS WITH A LOWER ALIPHATIC ALCOHOL ACIDIFIED WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, SULFURIC, ACETIC, CITRIC AND OXALIC ACIDS, THE STEPS COMPRISING CONTACTING THE ALCOHOLIC EXTRACT WITH A ALGANIC ACID TO REMOVE THE INSULIN FROM THE EXTRACT AND ELUTING THE INSULIN FROM THE ALGANIC ACID WITH A DILUTE MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC AND SULPHURIC ACID.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |