US5616222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical sensors paste
Assignee: Siemens Healthcare Diagnostics Inc
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Filing: 1995-09-15
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Granted: 1997-04-01
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Expires: 2015-09-15
Abstract
Abstract A solid state, 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
- 👤 Peter G. Edelman
- 👤 John A. Zalenski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:36
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: 5
Claim 1
Independent Claim
20 words
A paste for an electrochemical electrode comprising, (a) platinized carbon particles; (b) albumin; (c) binder resin; and (d) an enzyme.
Claim 2
Dependent Claim
20 words
A paste for an electrochemical electrode comprising, (a) platinized carbon particles; (b) albumin; (c) binder resin; and (d) an enzyme.
Claim 3
Dependent Claim
23 words
A paste for an electrochemical electrode comprising, (a) platinized carbon particles; (b) inactive protein; (c) binder resin; (d) an enzyme; and, (e) surfactant.
Claim 4
Dependent Claim
23 words
A paste for an electrochemical electrode comprising, (a) platinized carbon particles; (b) inactive protein; (c) binder resin; (d) an enzyme; and, (e) surfactant.
Claim 5
Dependent Claim
13 words
A paste in accordance with claim 1, wherein said binder resin is hydrophobic.
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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) | 2000-03-31 | 2000-09-30 | 2001-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-31 | 2004-09-30 | 2005-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-31 | 2008-09-30 | 2009-04-01 | $7700.00 | Window Closed / Lapsed |