Patent US2693434A successfully refreshed from Google Patents.
US2693434A
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Crystallized insulin preparation and process of preparing same
Assignee: Hoechst AG
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Filing: 1951-03-27
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Granted: 1954-11-02
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Expires: 1971-03-27
Abstract
No abstract record available.
Inventors
- 👤 Lindner Fritz
- 👤 Hochst Main
- 👤 Dorzbach Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:08
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/575; C07K14/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
THE PROCESS OF PREPARING CRYSTALLINE REACTION PRODUCTS OF INSULIN COMPRISING THE STEPS OF REACTING INSULIN WITH A WATER-SOLUBLE SALT OF BIS-2-METHYL-4-AMINOQUINOLY-6-CARBAMIDE IN AN AQUEOUS SOLUTION CONTAINING BUFFER SUBSTANCES, A WATER-SOLUBLE ORGANIC SOLVENT AND A SALT SELECTED FROM THE GROUP CONSISTING OF SALTS OF ZINC, CADMIUM, COBALT AND NICKEL, BY ADJUSTING THE SOLUTION TO A PH RANGE OF ABOUT 5 TO 6.5 AND ALLOWING IT TO STAND UNTIL THE REACTION PRODUCT AMORPHOUS AT THE BEGINING HAS BEEN TRANSFORMED INTO CRYSTALS.
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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |