Patent US3790446A successfully refreshed from Google Patents.
US3790446A
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US
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Cytophaga isoamylase
Assignee: Research Corp
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Filing: 1971-10-07
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Granted: 1974-02-05
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Expires: 1991-10-07
Abstract
Abstract ISOAMYLASE ENZYME WHICH WILL DEBRANCH POLYSACCHARIDES HAVING A-1*6-LINKED BRANCHES, FOR EXAMPLE GLYCOGEN AND AMYLOPECTIN, IS RECOVERED FROM AN ENZYME SYSTEM DERIVED FROMA SPECIES OF THE GENUS CYTOPHAGA DEPOSITED IN THE NATIONAL COLLECTION OF INDUSTRIAL BACTERIA IN ABERDEEN, SCOTLAND, UNDER NUMBER NCIB 9497. THIS CYTOPHAGA ISOAMYLASE HAS THE FOLLOWING IDENTIFYING CHARACTERISTICS: (A) AN OPTIMUM ACITVITY PH OF 5.5; (B) A MOLECULAR WEIGHT OF THE ORDER OF 120,000; (C) AN ISOELECTRIC POINT BETWEEN 5.00 AND 5.5; (D) INACTIVATION BY ETHYLENEDIAMIME TETRAACETATE; (E) NON-INACTIVATION BY TRIS-2-AMINO-2-HYDROXYMETHYL1,3-PROPANEDIOL OR P-CMB (P-CHLOROMERCURIBENZOATE).
Inventors
- 👤 Smith Z Gunja
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:48
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2405; C12N9/2451; C12N9/246; C12Y; C12Y302/00; C12Y302/01; C12Y302/01068; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815; Y10S435/816; Y10S435/8215; Y10S435/822
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |