US3723252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing pyrogenic substances out of urokinase
Assignee: Mochida Pharmaceutical Co Ltd
•
Filing: 1971-08-23
•
Granted: 1973-03-27
•
Expires: 1991-08-23
Abstract
Abstract METHOD OF MANUFACTURING UROKINASE FREE FROM PYROGENIC SUBSTANCES BY CONTACTING CRUDE UROKINASE WITH WEAKLY ACIDIC ION EXCHANGER AT AN ELECTROLYTE CONCENTRATION AND PH VALUE AT WHICH SAID UROKINASE IS PREFERENTIALLY ADSORBED BUT PYROGENIC SUBSTANCES ARE NOT.
Inventors
- 👤 N Ogawa
- 👤 N Koji
- 👤 Y Murayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:10
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6421; C12N9/6424; C12N9/6456; C12N9/6462; C12Y; C12Y304/00; C12Y304/21; C12Y304/21073; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |