US3308026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production and recovery of the kallikrein-inacti-vator from proteinaceous hormone wastes
Assignee: Bayer AG
•
Filing: 1964-01-13
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Granted: 1967-03-07
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Schultz Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:49
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/55; A61K38/57; C; C07; C07K; C07K14/00; C07K14/81; C07K14/8107; C07K14/811
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A METHOD WHEREIN PANCREAS GLAND MATERIAL IS TREATED TO PROVIDE AN ACIDIC ALCOHOLIC PANCREAS EXTRACT CONATAINING INSULIN, SAID EXTRACT IS NEUTRALIZED TO FORM A DISCARDABLE PERCIPITATE AND AN AQUEOUS SOLUTION, SAID AQUEOUS SOLUTION IS TREATED WITH A 20 TO 25 PERCENT SODIUM CHLORIDE SOLUTION TO PRODUCE CRUDE INSULIN AND A DISCARDABLE MOTHER LIQUOR FROM WHICH INSULIN IS SEPARATED, THE IMPROVEMENT WHICH COMPRISED TREATING A SAID DISCARDABLE MATERIAL WITH AN ALCOHOLIC REAGENT TO PRODUCE A SOLUTION CONTAINING KALLIKREIN-INACTIVATOR IN RECVOERABLE FORM, SAID ALCOHOLIC REAGENT CONSISTING ESSENTIALLY OF ALCOHOL IN CASE OF THE DISCARDABLE MOTHER LIQUOR AND IN THE CASE OF THE DISCARDABLE PRECIPITATE BEING SELECTED FROM THE GROUP CONSISTING OF AN ALCOHOLIC SALT SOLUTION AND ALCOHOLIC ACETIC ACID.
Claim 2
Dependent Claim
118 words
IN A METHOD WHEREIN PANCREAS GLAND MATERIAL IS TREATED TO PROVIDE AN ACIDIC ALCOHOLIC PANCREAS EXTRACT CONATAINING INSULIN, SAID EXTRACT IS NEUTRALIZED TO FORM A DISCARDABLE PERCIPITATE AND AN AQUEOUS SOLUTION, SAID AQUEOUS SOLUTION IS TREATED WITH A 20 TO 25 PERCENT SODIUM CHLORIDE SOLUTION TO PRODUCE CRUDE INSULIN AND A DISCARDABLE MOTHER LIQUOR FROM WHICH INSULIN IS SEPARATED, THE IMPROVEMENT WHICH COMPRISED TREATING A SAID DISCARDABLE MATERIAL WITH AN ALCOHOLIC REAGENT TO PRODUCE A SOLUTION CONTAINING KALLIKREIN-INACTIVATOR IN RECVOERABLE FORM, SAID ALCOHOLIC REAGENT CONSISTING ESSENTIALLY OF ALCOHOL IN CASE OF THE DISCARDABLE MOTHER LIQUOR AND IN THE CASE OF THE DISCARDABLE PRECIPITATE BEING SELECTED FROM THE GROUP CONSISTING OF AN ALCOHOLIC SALT SOLUTION AND ALCOHOLIC ACETIC ACID.
References Cited (Backward Citations)
US2424401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |