US3672955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of an insoluble active enzyme
Assignee: United States Department of Agriculture
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Filing: 1970-05-20
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Granted: 1972-06-27
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Expires: 1990-05-20
Abstract
Abstract PROCESS FOR PREPARING IN INSOLUBLE BUT ACTIVE ENZYME WHICH COMPRISES EMULSIFYING AN AQUEOUS DISPERSION OF THE ENZYME WITH A SOLUTION OF AN ORGANIC POLYISOCYANATE IN AN ESSENTIALLY WATER-IMMISICIBLE SOLVENT.
Inventors
- 👤 William L Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:34
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/14; C12N11/02; C12N11/08; C12N11/089; C12N11/093
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |