US2801953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing crystallized insulin preparations
Assignee: Hoechst AG
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Filing: 1953-02-25
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Granted: 1957-08-06
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Expires: 1973-02-25
Abstract
No abstract record available.
Inventors
- 👤 Dorzbach Eugen
- 👤 Lindner Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/17; A61K38/22; A61K38/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS OF PREPARING CRYSTALLIZED INSULIN PREPARATIONS COMPRISING STIRRING INSULIN CRYSTALS AT ABOUT NEUTRAL PH WHILE MAINTAINING SAID PH BY ADDITION OF ALKALI WITH AN AQUEOUS SOLUITION OF A WATER-SOLUBLE SALT OF AN ORGANIC BASE SELECTED FROM THE GROUP CONSISTING OF BIS-2-METHYL-4AMINO-QUINOLYL-6-CARBAMIDE AND PROTAMINE, WHEREBY WITHOUT DISSOLUTION OF THE INSULIN CRYSTALS, SAID BASE IS ABSORBED BY SAID CRYSTALS.
Claim 2
Dependent Claim
58 words
A PROCESS OF PREPARING CRYSTALLIZED INSULIN PREPARATIONS COMPRISING STIRRING INSULIN CRYSTALS AT ABOUT NEUTRAL PH WHILE MAINTAINING SAID PH BY ADDITION OF ALKALI WITH AN AQUEOUS SOLUITION OF A WATER-SOLUBLE SALT OF AN ORGANIC BASE SELECTED FROM THE GROUP CONSISTING OF BIS-2-METHYL-4AMINO-QUINOLYL-6-CARBAMIDE AND PROTAMINE, WHEREBY WITHOUT DISSOLUTION OF THE INSULIN CRYSTALS, SAID BASE IS ABSORBED BY SAID CRYSTALS.
References Cited (Backward Citations)
DE727888C
Cited
US2693434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |