Patent US3736231A successfully refreshed from Google Patents.
US3736231A
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US
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Preparation of insolubilized enzymes
Assignee: United States Department of Agriculture
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Filing: 1971-11-01
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Granted: 1973-05-29
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Expires: 1991-11-01
Abstract
Abstract INSOLUBILIZED BUT ACTIVE ENZYMES ARE PARPARED BY REACTING AN ENZYME WITH TANNIC ACID AND GLUTARALDEHYDE.
Inventors
- 👤 W Stanley
- 👤 A Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:15
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/02
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |