Patent US3779869A successfully refreshed from Google Patents.
US3779869A
Expired / Lapsed
US
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Enzyme stabilization
Assignee: Bayer Corp
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Filing: 1971-05-13
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Granted: 1973-12-18
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Expires: 1991-05-13
Abstract
Abstract The glucose isomerase activity contained within bacterial cells can be stabilized by treating the bacterial cells with glutaraldehyde. The resulting stabilized enzyme can be used for conversion of glucose to fructose and then reused for further conversions with minimum reduction in enzyme activity after each use.
Inventors
- 👤 M Zienty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:37
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A process according to claim 1 wherein the glutaraldehyde is employed in an amount from about 10 to about 50 weight percent based on the dry weight of the cells.
Claim 2
Dependent Claim
15 words
A process according to claim 1 wherein the bacterial cells are produced from Streptomyces olivaceus.
References Cited (Backward Citations)
US3625828A
Cited
US3694314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |