Patent US3558773A successfully refreshed from Google Patents.
US3558773A
Expired / Lapsed
US
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Crystalline kallikrein-inactivator and process for preparing the same
Assignee: Bayer AG
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Filing: 1967-02-21
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Granted: 1971-01-26
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Expires: 1987-02-21
Abstract
Abstract SUBSTANTIALLY PURE CRYSTALLINE KALLIKREIN-INACTIVATOR IS PROVIDED WICH IS ESSENTIALLY FREE FROM AMORPHOUS MATERIAL AND INORGANIC SALTS. SUCH CRYSTALLINE SUBSTANCE IS DISTINGUISHED FROM THE PREVIOUSLY OBTAINED CRYSTALLINE MATERIAL WHICH IS IMPURE. A METHOD FOR OBTAINING THE CRYSTALS IS PROVIDED WHEREIN AN AQUEOUS SOLUTIONOF K1 PREPARATION IS ADJUSTED TO PH ABOVE 9 AND THE SUBSTANCE CRYSTALLIZED THEREFROM. THE CRYSTALLINE KL PERMITS THE REVERSIBLE INACTIVATION OF TRYSPIN, CHYMOTRYPSINS, FIBRINOLYSIN (PLASMIN) AND KALLIKREIN. PHARMACEUTICAL COMPOSITIONS CONTAINING THE CRYSTALLINE SUBSTANCE ARE LIKEWISE PROVEDED. THEY ARE ACTIVE AS ANTI-FIBRINOLYTIC AGENTS.
Inventors
- 👤 Fritz Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:34
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/81; C07K14/8107; C07K14/811; A; A61; A61K; A61K38/00; A61K38/16; A61K38/55; A61K38/57; C07K1/00; C07K1/14; C07K1/16; C07K1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |