US3832285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing maltose of high purity
Assignee: Hayashibara Seibutsu Kagaku Kenkyujo KK
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Filing: 1972-05-24
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Granted: 1974-08-27
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Expires: 1992-05-24
Abstract
Abstract VERY PURE MALTOSE IS OBTAINED FROM STARCH PREDOMINANTLY CONSISTING OF AMYLOPECTIN BY REACTION WITH BAMYLASE FREE FROM SIGNIFICANT AMOUNTS OF A-AMYLASE, MALTASE, GLUCAMYLASE, AND ISOAMYLASE, DIALYSIS OF THE REACTION MIXTURE THROUGH A MEMBRANE HAVING AN EFFECTIVE PORE SIZE OF 5 A . TO 30 A. AGAINST PURE WATER BEFORE SIGNIFICANT AMOUNTS OF TRISACCHARIDES OR ALIGOSACCHARIDES OF LOWER MOLECULAR WEIGHT ARE FORMED, AND RECOVERING THE MALTOSE FROM THE DIALYZATE.
Inventors
- 👤 M Kurimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:04
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/22
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |