Patent US3122761A successfully refreshed from Google Patents.
US3770700A
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Novel carbonyl polymers
Assignee: Wyeth Holdings LLC
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Filing: 1971-08-24
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Granted: 1973-11-06
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Expires: 1991-08-24
Abstract
Abstract CARBONYL POLYMERS CROSS-LINKED WITH DIALDEHYDES, A METHOD FOR THEIR PRODUCTION AND POLYMER BOUND CATALYTICALLY ACTIVE ENZYMES PRODUCED THEREFROM, ARE DISCLOSED.
Inventors
- 👤 P Forgione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:46
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/28; C12; C12N; C12N11/00; C12N11/02; C12N11/08; C12N11/082; C12N11/087; C12N11/089; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |