US4170530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen concentration cell and a method of producing the same
Assignee: NGK Insulators Ltd
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Filing: 1978-02-06
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Granted: 1979-10-09
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Expires: 1998-02-06
Abstract
Abstract An oxygen concentration cell capable of operating at a lower temperature and having a higher response speed is disclosed. The cell consists of an oxygen ion conductive solid electrolyte provided on both of its surfaces with electrodes consisting of a porous electrically conductive layer, which is formed of a platinum group metal and contains in its pores a metal oxide formed by the thermal decomposition of an oxide-forming metal compound.
Inventors
- 👤 Tetsuo Watanabe
- 👤 Shigetaka Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:31
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; G01N27/4075; H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9041; H01M4/905; H01M4/9066; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
An oxygen concentration cell consisting of an oxygen ion conductive solid electrolyte provided on its both surfaces with electrodes, each electrode consisting of a porous electrically conductive layer, which consists of a platinum group metal and contains in its pores a metal oxide formed in liter by the thermal decomposition of an oxide-forming metal compound.
Claim 2
Dependent Claim
55 words
An oxygen concentration cell consisting of an oxygen ion conductive solid electrolyte provided on its both surfaces with electrodes, each electrode consisting of a porous electrically conductive layer, which consists of a platinum group metal and contains in its pores a metal oxide formed in liter by the thermal decomposition of an oxide-forming metal compound.
Claim 3
Dependent Claim
15 words
An oxygen concentration cell according to claim 1, wherein said metal oxide is zirconium oxide.
Claim 4
Dependent Claim
58 words
A method of producing the oxygen concentration cell according to claim 1, comprising forming porous layers consisting of a platinum group metal on both surfaces of an oxygen ion conductive solid electrolyte, applying a solution of an oxide-forming metal compound to the layers, and converting the metal compound in the solution into a metal oxide by thermal decomposition.
Claim 5
Dependent Claim
20 words
A method according to claim 3, wherein said solution of oxide-forming metal compound is an aqueous solution of zirconium oxychloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |