US4559126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical device
Assignee: NGK Insulators Ltd
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Filing: 1984-07-30
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Granted: 1985-12-17
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Expires: 2004-07-30
Abstract
Abstract In an electrochemical device having an electrochemical cell with electrodes mounted on a solid electrolyte layer and a heater carried by a ceramic high-electric layer, a resistance ceramic layer is disposed between the solid electrolyte layer and the ceramic layer.
Inventors
- 👤 Syunzo Mase
- 👤 Shigeo Soejima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:15
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; G01N27/4071; G01N27/4067
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
67 words
An electrochemical device, comprising an electrochemical cell having at least one pair of electrodes disposed in contact with a solid electrolyte, a heater layer having a heater embedded in a ceramic layer having substantially the same coefficient of thermal expansion as that of said solid electrolyte, and a high electric resistance ceramic layer spread substantially over an entire span between said electrochemical cell and said heater layer.
Claim 2
Dependent Claim
67 words
An electrochemical device, comprising an electrochemical cell having at least one pair of electrodes disposed in contact with a solid electrolyte, a heater layer having a heater embedded in a ceramic layer having substantially the same coefficient of thermal expansion as that of said solid electrolyte, and a high electric resistance ceramic layer spread substantially over an entire span between said electrochemical cell and said heater layer.
Claim 3
Dependent Claim
27 words
An electrochemical device as set forth in claim 1, wherein said high electric resistance ceramic comprises a material selected from the group consisting of alumina and spinel.
Claim 4
Dependent Claim
20 words
An electrochemical device as set forth in claim 1, wherein said solid electrolyte consists essentially of zirconia (ZrO 2 ).
Claim 5
Dependent Claim
24 words
An electrochemical device as set forth in claim 3, wherein said ceramic layer of said heater layer consists essentially of zirconia (ZrO 2 ).
Claim 6
Dependent Claim
18 words
An electrochemical device as set forth in claim 4, wherein said high electric resistance ceramic layer is porous.
Claim 7
Dependent Claim
31 words
An electrochemical device as forth in claim 4, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 8
Dependent Claim
18 words
An electrochemical device as set forth in claim 3, wherein said high electric resistance ceramic layer is porous.
Claim 9
Dependent Claim
31 words
An electrochemical device as forth in claim 3, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 10
Dependent Claim
18 words
An electrochemical device as set forth in claim 1, wherein said high electric resistance ceramic layer is porous.
Claim 11
Dependent Claim
31 words
An electrochemical device as forth in claim 9, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 12
Dependent Claim
31 words
An electrochemical device as forth in claim 1, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 13
Dependent Claim
101 words
An electrochemical device, comprising an electrochemical cell having at least one pair of electrodes disposed in contact with a solid electrolyte, a heater layer having a heater carried by a ceramic layer having substantially the same coefficient of thermal expansion as that of said solid electrolyte, and a high electric resistance ceramic layer spread substantially over an entire span between said electrochemical cell and said heater layer so as to be attached to both said electrochemical cell and said heater layer, wherein said ceramic layer of said heater layer prevents the heater from being exposed to a gas to be measured.
Claim 14
Dependent Claim
101 words
An electrochemical device, comprising an electrochemical cell having at least one pair of electrodes disposed in contact with a solid electrolyte, a heater layer having a heater carried by a ceramic layer having substantially the same coefficient of thermal expansion as that of said solid electrolyte, and a high electric resistance ceramic layer spread substantially over an entire span between said electrochemical cell and said heater layer so as to be attached to both said electrochemical cell and said heater layer, wherein said ceramic layer of said heater layer prevents the heater from being exposed to a gas to be measured.
Claim 15
Dependent Claim
28 words
An electrochemical device as set forth in claim 12, wherein said high electric resistance ceramic layer comprises a material selected from the group consisting of alumina and spinel.
Claim 16
Dependent Claim
20 words
An electrochemical device as set forth in claim 12, wherein said solid electrolyte consists essentially of zirconia (ZrO 2 ).
Claim 17
Dependent Claim
24 words
An electrochemical device as set forth in claim 14, wherein said ceramic layer of said heater layer consists essentially of zirconia (ZrO 2 ).
Claim 18
Dependent Claim
18 words
An electrochemical device as set forth in claim 15, wherein said high electric resistance ceramic layer is porous.
Claim 19
Dependent Claim
31 words
An electrochemical device as forth in claim 15, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 20
Dependent Claim
18 words
An electrochemical device as set forth in claim 14, wherein said high electric resistance ceramic layer is porous.
Claim 21
Dependent Claim
31 words
An electrochemical device as forth in claim 14, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 22
Dependent Claim
18 words
An electrochemical device as set forth in claim 12, wherein said high electric resistance ceramic layer is porous.
Claim 23
Dependent Claim
31 words
An electrochemical device as forth in claim 20, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 24
Dependent Claim
31 words
An electrochemical device as forth in claim 12, wherein said ceramic layer of said heater layer includes a gap at an intermediate portion thereof between mutually facing portions of said heater.
Claim 25
Dependent Claim
87 words
An electrochemical device, comprising an electrochemical cell having at least one pair of electrodes disposed in contact with a solid electrolyte, a heater layer having a heater embedded in a ceramic layer having substantially the same coefficient of thermal expansion as that of said solid electrolyte, and a high electric resistance ceramic layer spread substantially over an entire span between said electrochemical cell and said heater layer, wherein said ceramic layer of said heater layer prevents the heater from being exposed to a gas to be measured.
Claim 26
Dependent Claim
87 words
An electrochemical device, comprising an electrochemical cell having at least one pair of electrodes disposed in contact with a solid electrolyte, a heater layer having a heater embedded in a ceramic layer having substantially the same coefficient of thermal expansion as that of said solid electrolyte, and a high electric resistance ceramic layer spread substantially over an entire span between said electrochemical cell and said heater layer, wherein said ceramic layer of said heater layer prevents the heater from being exposed to a gas to be measured.
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) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |