Patent US3723251A successfully refreshed from Google Patents.
US3723251A
Expired / Lapsed
US
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Method for extracting urokinase
Assignee: Mochida Pharmaceutical Co Ltd
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Filing: 1971-08-23
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Granted: 1973-03-27
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Expires: 1991-08-23
Abstract
Abstract ACRYLONITRILE MATERIAL IS USED TO ADSORB UROKINASE FROM A LIQUID, AND SAID UROKINASE IS SUBSEQUENTLY ELUTED FROM SAID MATERIAL.
Inventors
- 👤 Y Murayama
- 👤 N Ogawa
- 👤 N Koji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:18
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
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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) | 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 |