US7070680B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biosensor
Assignee: Osang HealthCare Co Ltd
•
Filing: 2002-10-04
•
Granted: 2006-07-04
•
Expires: 2022-10-04
Abstract
Abstract A biosensor for quantifying a specific substance contained in a biological sample includes an electrically insulating base plate, a plurality of lead terminals formed on the base plate, a plurality of lead wires connected to the lead terminals, respectively, an electrode system including two working electrodes and one reference electrode connected to the lead wires, respectively, an insulating layer that insulates the electrodes, an enzyme reaction layer formed on the insulating layer and the electrodes, a spacer formed on the enzyme reaction layer so as to ensure a sufficient space that receives a sample, and a cover formed on the spacer. Further, the spacer has a sample introduction port opened at one side of the spacer, the cover has at least one slit for venting air existing in a sample receiving space defined by the spacer and the cover, and the slit extends to above the electrodes from one end of the cover.
Inventors
- 👤 Byung-Woo Bae
- 👤 Heon-Kwon Lee
- 👤 Sung-Dong Lee
- 👤 Mi-Joong Kwon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:49
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/26; C12Q1/001; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/327; G01N27/3271; G01N27/3272
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
143 words
A biosensor comprising: an electrically insulating base plate; a plurality of lead terminals formed on the base plate; a plurality of lead wires connected to the lead terminals, respectively; an electrode system including two working electrodes and one reference electrode connected to the lead wires, respectively; an insulating layer that insulates the electrodes; an enzyme reaction layer formed on the insulating layer and the electrodes; a spacer formed on the enzyme reaction layer so as to ensure a sufficient space to receive a sample; and a cover formed on the spacer, wherein the spacer has a sample introduction port opened at one side of the spacer, and the cover has at least one slit that vents air existing in a sample receiving space defined by the spacer and the cover, the slit extending to above the electrodes from one end of the cover.
Claim 2
Dependent Claim
143 words
A biosensor comprising: an electrically insulating base plate; a plurality of lead terminals formed on the base plate; a plurality of lead wires connected to the lead terminals, respectively; an electrode system including two working electrodes and one reference electrode connected to the lead wires, respectively; an insulating layer that insulates the electrodes; an enzyme reaction layer formed on the insulating layer and the electrodes; a spacer formed on the enzyme reaction layer so as to ensure a sufficient space to receive a sample; and a cover formed on the spacer, wherein the spacer has a sample introduction port opened at one side of the spacer, and the cover has at least one slit that vents air existing in a sample receiving space defined by the spacer and the cover, the slit extending to above the electrodes from one end of the cover.
Claim 3
Dependent Claim
40 words
The biosensor as set forth in claim 1 , further including a curved groove formed at one end of the cover toward the electrodes, the slit being formed from a certain position of the curved groove with a predetermined length.
Claim 4
Dependent Claim
26 words
The biosensor as set forth in claim 2 , wherein the slit is a plurality of slits spaced at a predetermined interval along a length direction.
Claim 5
Dependent Claim
36 words
The biosensor as set forth in claim 2 , wherein the respective working electrodes have the same electrical resistance and area, and the reference electrode is spaced at the same distance from the respective working electrodes.
Claim 6
Dependent Claim
25 words
The biosensor as set forth in claim 4 , wherein the reference electrode has an area more than 1.5 times larger than the working electrodes.
Claim 7
Dependent Claim
26 words
The biosensor as set forth in claim 1 , wherein the slit is a plurality of slits spaced at a predetermined interval along a length direction.
Claim 8
Dependent Claim
36 words
The biosensor as set forth in claim 1 , wherein the respective working electrodes have the same electrical resistance and area, and the reference electrode is spaced at the same distance from the respective working electrodes.
Claim 9
Dependent Claim
25 words
The biosensor as set forth in claim 7 , wherein the reference electrode has an area more than 1.5 times larger than the working electrodes.
Claim 10
Dependent Claim
48 words
The biosensor as set forth in claim 1 , wherein when the sample receiving space is placed in a vertical direction, the reference electrode has an H-shape, and the respective working electrodes are arranged at the upper and lower portions of a horizontal axis of the reference electrode.
Claim 11
Dependent Claim
36 words
The biosensor as set forth in claim 9 , wherein the respective working electrodes have the same electrical resistance and area, and the reference electrode is spaced at the same distance from the respective working electrodes.
Claim 12
Dependent Claim
54 words
The biosensor as set forth in claim 1 , wherein when the sample receiving space is placed in a vertical direction, the reference electrode has an E-shape, and the respective working electrodes are arranged at the upper and lower portions of a horizontal axis, which is formed at the center of the reference electrode.
Claim 13
Dependent Claim
36 words
The biosensor as set forth in claim 11 , wherein the respective working electrodes have the same electrical resistance and area, and the reference electrode is spaced at the same distance from the respective working electrodes.
References Cited (Backward Citations)
US6004441A
Cited
US5958199A
Cited
US5985116A
Cited
US6077408A
Cited
US6059946A
Cited
US6212417B1
Cited
US6458258B2
Cited
US20040146958A1
Cited
US6787013B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-07-03 | 2010-01-02 | 2010-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-07-03 | 2014-01-02 | 2014-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-07-03 | 2018-01-02 | 2018-07-04 | $7700.00 | Window Closed / Lapsed |