Patent US3677901A successfully refreshed from Google Patents.
US3677901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of glycerokinase
Assignee: Roche Diagnostics GmbH
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Filing: 1970-09-09
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Granted: 1972-07-18
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Expires: 1990-09-09
Abstract
Abstract GLYCEROKINASE IS OBTAINED IN HIGH YIELD AND IN STABLE FORM FROM MICRO-ORGANISMS BY DIGESTING DRIED MICRO-ORGANISMS BY HIGH PRESSURE DISPERSION, SUBSEQUENTLY SUBJECTING SAME TO A PROTAMINE PRECIPITATION SEPARATING THE PRECIPITATE FORMED AND WORKING UP TO THE FILTRATE IN KNOWN MANNER WITH THE USE OF AN ANION EXCHANGER BASED ON CELLULOSE OR DEXTRAN.
Inventors
- 👤 Hans Ulrich Bergmeyer
- 👤 Gotthilf Naher
- 👤 Waldemar Thum
- 👤 Albert Lauerer
- 👤 Rudolf Emmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:27
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/10; C12N9/12; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815; Y10S435/816
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |