US5601694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical sensors
Assignee: Siemens Healthcare Diagnostics Inc
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Filing: 1995-07-27
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Granted: 1997-02-11
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Expires: 2015-07-27
Abstract
Abstract A solid shale, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.
Inventors
- 👤 Thomas C. Maley
- 👤 Paul A. D'Orazio
- 👤 Bonnie C. Dalzell
- 👤 Peter G. Edelman
- 👤 James E. Flaherty
- 👤 Richard W. Mason
- 👤 Robert R. McCaffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:14
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; C; C12; C12Q; C12Q1/00; C12Q1/001; C12Q1/005; C12Q1/006; Y; Y10; Y10S; Y10S435/00; Y10S435/817; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/53; Y10T29/5313; Y10T29/53261; Y10T29/53265
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
An interference electrode, comprising: an electrically nonconductive substrate; and an electrically conductive material adhered to a portion of said substrate, a first portion of said electrically conductive material being covered with an electrically insulating dielectric coating, and a second portion of said electrically conductive material being covered with an inactive layer comprising an inactive protein immobilized onto platinized carbon powder particles, wherein said particles are distributed substantially uniformly throughout said inactive layer; and a semi-permeable membrane covering said inactive layer.
Claim 2
Dependent Claim
80 words
An interference electrode, comprising: an electrically nonconductive substrate; and an electrically conductive material adhered to a portion of said substrate, a first portion of said electrically conductive material being covered with an electrically insulating dielectric coating, and a second portion of said electrically conductive material being covered with an inactive layer comprising an inactive protein immobilized onto platinized carbon powder particles, wherein said particles are distributed substantially uniformly throughout said inactive layer; and a semi-permeable membrane covering said inactive layer.
Claim 3
Dependent Claim
13 words
The interference electrode according to claim 1, wherein the inactive protein is albumin.
Claim 4
Dependent Claim
15 words
The inactive electrode according to claim 1, wherein the inactive protein is bovine serum albumin.
Claim 5
Dependent Claim
68 words
An interference electrode, comprising: an electrically conductive material, a first portion of said electrically conductive material being covered with an electrically insulating dielectric coating, and a second portion of said electrically conductive material being covered with an inactive layer comprising an inactive protein immobilized onto platinized carbon powdered particles, wherein said particles are distributed substantially uniformly throughout said inactive layers; and a semi-permeable membrane covering said inactive layer.
Claim 6
Dependent Claim
68 words
An interference electrode, comprising: an electrically conductive material, a first portion of said electrically conductive material being covered with an electrically insulating dielectric coating, and a second portion of said electrically conductive material being covered with an inactive layer comprising an inactive protein immobilized onto platinized carbon powdered particles, wherein said particles are distributed substantially uniformly throughout said inactive layers; and a semi-permeable membrane covering said inactive layer.
Claim 7
Dependent Claim
13 words
The interference electrode according to claim 4, wherein the inactive protein is albumin.
Claim 8
Dependent Claim
16 words
The interference electrode according to claim 5, further comprising a substrate for said electrically conductive material.
Claim 9
Dependent Claim
15 words
The interference electrode according to claim 4, wherein the inactive protein is bovine serum albumin.
Claim 10
Dependent Claim
16 words
The interference electrode according to claim 7, further comprising a substrate for said electrically conductive material.
Claim 11
Dependent Claim
16 words
The interference electrode according to claim 4, further comprising a substrate for said electrically conductive material.
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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) | 2000-02-11 | 2000-08-12 | 2001-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-11 | 2004-08-12 | 2005-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-11 | 2008-08-12 | 2009-02-11 | $7700.00 | Window Closed / Lapsed |