US6458258B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biosensor
Assignee: Panasonic Holdings Corp
•
Filing: 2000-12-27
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Granted: 2002-10-01
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Expires: 2020-12-27
Abstract
Abstract The present invention provides a biosensor having a high current response sensitivity, a low blank response and a high storage stability. This sensor comprises an electrode system including a working electrode and a counter electrode, for forming an electrochemical measurement system by coming in contact with a supplied solution; an insulating supporting member for supporting the electrode system; a first reagent layer formed on the working electrode; and a second reagent layer formed on the counter electrode, wherein the first reagent layer does not contain an enzyme, but it contains at least an electron mediator, and the second reagent layer does not contain an electron mediator, but it contains at least an enzyme.
Inventors
- 👤 Yuko Taniike
- 👤 Shin Ikeda
- 👤 Shiro Nankai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:57
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/001; C12Q1/004
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
A biosensor comprising: an electrode system including a working electrode and a counter electrode, for forming an electrochemical measurement system by coming in contact with a supplied sample solution; an electrically insulating supporting member for supporting said electrode system; a first reagent layer formed on said working electrode; and a second reagent layer formed on said counter electrode, wherein said first reagent layer does not contain an enzyme, but it contains at least an electron mediator, and said second reagent layer does not contain an electron mediator, but it contains at least an enzyme.
Claim 2
Dependent Claim
94 words
A biosensor comprising: an electrode system including a working electrode and a counter electrode, for forming an electrochemical measurement system by coming in contact with a supplied sample solution; an electrically insulating supporting member for supporting said electrode system; a first reagent layer formed on said working electrode; and a second reagent layer formed on said counter electrode, wherein said first reagent layer does not contain an enzyme, but it contains at least an electron mediator, and said second reagent layer does not contain an electron mediator, but it contains at least an enzyme.
Claim 3
Dependent Claim
29 words
The biosensor in accordance with claim 1 , wherein said supporting member comprises an electrically insulating base plate on which said working electrode and said counter electrode are formed.
Claim 4
Dependent Claim
75 words
The biosensor in accordance with claim 1 , wherein said supporting member comprises an electrically insulating base plate and an electrically insulating cover member for forming a sample solution supply pathway or a sample solution storage section between said cover member and said base plate, said working electrode is formed on said base plate, and said counter electrode is formed on an inner surface of said cover member so as to face said working electrode.
Claim 5
Dependent Claim
43 words
The biosensor in accordance with claim 3 , wherein said cover member comprises a sheet member having an outwardly expanded curved section, for forming a sample solution supply pathway or a sample solution storage section between said cover member and said base plate.
Claim 6
Dependent Claim
32 words
The biosensor in accordance with claim 3 , wherein said cover member comprises a spacer having a slit for forming said sample solution supply pathway and a cover for covering said spacer.
Claim 7
Dependent Claim
17 words
The biosensor in accordance with claim 1 , wherein said first reagent layer contains a hydrophilic polymer.
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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) | 2005-09-30 | 2006-04-01 | 2006-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-30 | 2010-04-01 | 2010-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-30 | 2014-04-01 | 2014-10-01 | $7700.00 | Window Closed / Lapsed |