US3788948A
Expired / Lapsed
US
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Method of binding,by covalent bonds,proteins and polypeptides to polymers using cyanates
Assignee: Pfizer Health AB
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Filing: 1971-10-12
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Granted: 1974-01-29
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Expires: 1991-10-12
Abstract
Abstract ORGANIC CYANATE COMPOUNDS ARE EMPLOYED FOR BINDING ORGANIC COMPOUNDS CONTAINING A PRIMARY OR SECONDARY AMINO GROUP TO POLYMERS CONTAINING ONE OR MORE HYDROXYL AND/OR PRIMARY AND/OR SECONDARY AMINO GROUPS. THE INVENTION IS USEFUL, AMONG OTHER THINGS, FOR BINDING WASTE SOLUBLE ENZYMES TO WATER INSOLUBLE POLYMERS WHILE PRESERVING THE ACTIVITY OF THE ENZYME.
Inventors
- 👤 S Kagedal
- 👤 S Akerstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
C; C07; C07C; C07C261/00; C07C261/02; A; A61; A61K; A61K47/00; A61K47/50; A61K47/51; A61K47/68; A61K47/6889; C08; C08B; C08B37/00; C12; C12N; C12N11/00; C12N11/02; C12N11/06; C12N11/08; C12N11/082; C12N11/087; C12N11/089; C12N11/10; C07C2603/00; C07C2603/56; C07C2603/58; C07C2603/70; C07C2603/74; Y; Y10; Y10S; Y10S530/00; Y10S530/81; Y10S530/812; Y10S530/813; Y10S530/814; Y10S530/815; Y10S530/862
Claims Analysis
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |