US3788946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of amylose as the substrate for the quantitative analysis of amylase
Assignee: Nagase Viita Co Ltd
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Filing: 1971-07-28
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Granted: 1974-01-29
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Expires: 1991-07-28
Abstract
Abstract THE INVENTION DEALS WITH A METHOD OF PREPARATION OF AMYLOSE WHICH GIVES AN EXCELLENT SUBSTRATE FOR THE QUANTITATIVE ANALYSIS OF AMYLASE, ESPECIALLY FOR THAT IN BLOOD SERUM. THE OUTLINE OF THE PREPARATION PROCESS IS THAT THE GELATINIZED STARCH OR WAXY-STARCH IS CONVERTED INTO LINEAR CHAIN AMYLOSES BY THE AID OF ALPHA-1,6-GLUCOSIDASE, AND THROUGH PRECIPITATION AND FRACTIONATION THE LINEAR CHAIN AMYLOSE, WHICH IS WATER-SOLUBLE AND VERY SENSITIVE TO AMYLASE, IS SEPARATED FROM THE ONLY SLIGTLY SOLUBLE MACROMOLECULES AND OLIGOSACCHARIDES.
Inventors
- 👤 M Kurimoto
- 👤 M Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:52
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/34; C12Q1/40; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/874
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 |