Patent US3711376A successfully refreshed from Google Patents.
US3711376A
Expired / Lapsed
US
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Coagulants
Assignee: TWYFORD LABOR Ltd
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Filing: 1970-06-29
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Granted: 1973-01-16
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Expires: 1990-06-29
Abstract
Abstract AN IMPROVEMENT IN THE PROCESS FOR PURIFYING THE ANTICOAGULANT ENZYME FROM THE VENOM OF ANCISTRODON RHODOSTOMA (THE MALAYAN PIT VIPER) COMPRISES INCLUDING, AMONG THE SEPARATION STEPS ALREADY KNOWN, THAT OF SEPARATION ON A WEAKLY ACID CATION EXCHANGE MATERIAL. THE INVENTION ALSO INCLUDES A NOVEL CASEINOLYTIC ENZYME FOUND IN THE VENOM AND WHICH MAY BE SEPARATED BY THESE PROCEDURES.
Inventors
- 👤 M Hatton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:34
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6402; C12N9/6418; A; A61; A61K; A61K38/00; 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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |