US4547280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maltose sensor
Assignee: Hitachi Ltd
•
Filing: 1984-11-26
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Granted: 1985-10-15
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Expires: 2004-11-26
Abstract
Abstract In a method for assaying maltose to quantitatively determine amylase, which comprises an enzyme membrane having immobilized α-glucosidase and glucose oxidase, the present invention is an improvement of the enzyme electrode for assaying maltose, where a hydrogen peroxide electrode provided with a palladium cathode is used.
Inventors
- 👤 Yoshiharu Karasawa
- 👤 Yoshinori Takata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:05
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/001; C12Q1/005; Y; Y10; Y10S; Y10S435/00; Y10S435/817
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
A maltose sensor which comprises an enzyme membrane having immobilized α-glucosidase and glucose oxidase and an electrode, the electrode being a hydrogen peroxide electrode provided with a palladium cathode.
Claim 2
Dependent Claim
29 words
A maltose sensor which comprises an enzyme membrane having immobilized α-glucosidase and glucose oxidase and an electrode, the electrode being a hydrogen peroxide electrode provided with a palladium cathode.
Claim 3
Dependent Claim
20 words
A maltose sensor according to claim 1, wherein the palladium cathode is palladium having a purity of at least 99%.
Claim 4
Dependent Claim
20 words
A maltose sensor according to claim 1 or 2, wherein the hydrogen peroxide electrode is provided with a platinum anode.
References Cited (Backward Citations)
US4169765A
Cited
US4172765A
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US4354913A
Cited
DD142248A1
Cited
JPS5697863A
Cited
JPS57177699A
Cited
JPS58160861A
Cited
JPS58193448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |