US4280889A
Expired / Lapsed
US
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Solid state ion responsive and reference electrodes
Assignee: Honeywell Inc
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Filing: 1978-02-02
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Granted: 1981-07-28
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Expires: 1998-02-02
Abstract
Abstract A solid state ion concentration measuring electrode having the ion concentration measuring electrode structure formed by successive layers on an insulating substrate with an outer ion sensitive glass layer being deposited on a substantially thermally matched supporting solid electrolyte layer by RF sputtering. The reference electrode is similarly formed by depositing an outer layer of glass onto a supporting solid electrolyte layer by RF sputtering with the temperature expansion of the glass and supporting solid electrolyte structure being selected to produce a differential expansion causing random cracking of the glass layer during temperature cycling of the referenece electrode. A combination structure is provided wherein the ion concentration measuring electrode and the reference electrode are formed on opposite sides of the same electrically insulating substrate with a thermal compensating element being included in the integrated package.
Inventors
- 👤 Eugene L. Szonntagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:42
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/36; G01N27/333
Claims Analysis
Total Claims: 55
Claim 1
Independent Claim
42 words
A pH electrode comprising an electrically insulating substrate, a metallic layer on said substrate, a solid electrolyte layer on said metallic layer, and an RF sputtered pH glass layer on said last-mentioned layer and having a thickness of 10 to 10,000 Angstroms.
Claim 2
Dependent Claim
42 words
A pH electrode comprising an electrically insulating substrate, a metallic layer on said substrate, a solid electrolyte layer on said metallic layer, and an RF sputtered pH glass layer on said last-mentioned layer and having a thickness of 10 to 10,000 Angstroms.
Claim 3
Dependent Claim
41 words
A pH electrode as set forth in claim 1 wherein said pH glass layer has a coefficient of thermal expansion substantially matched to a coefficient of thermal expansion of said electrolyte layer to maintain the integrity of said pH glass layer.
Claim 4
Dependent Claim
22 words
A pH electrode as set forth in claim 1 wherein said metallic layer is silver and said electrolyte layer is silver chloride.
Claim 5
Dependent Claim
43 words
A pH electrode as set forth in claim 1 and further including electrical connection means connected to said metallic layer and encapsulating means covering said substrate, said metallic layer and a portion of said pH glass layer while exposing said electrical connection means.
Claim 6
Dependent Claim
57 words
A reference electrode comprising an electrically insulating substrate, a metallic layer on said substrate, a solid electrolyte layer on said metallic layer and a cracked glass layer on said electrolyte layer and having a coefficient of thermal expansions substantially mismatched with respect to a coefficient of thermal expansion of said electrolyte layer to produce differential expansion therebetween.
Claim 7
Dependent Claim
57 words
A reference electrode comprising an electrically insulating substrate, a metallic layer on said substrate, a solid electrolyte layer on said metallic layer and a cracked glass layer on said electrolyte layer and having a coefficient of thermal expansions substantially mismatched with respect to a coefficient of thermal expansion of said electrolyte layer to produce differential expansion therebetween.
Claim 8
Dependent Claim
22 words
A reference electrode as set forth in claim 5 wherein said metallic layer is silver and said electrolyte layer is silver chloride.
Claim 9
Dependent Claim
45 words
A reference electrode as set forth in claim 5 and further including electrical connection means connected to said metallic layer and encapsulating means encompassing said substrate, said metallic layer, said electrolyte layer and a portion of said glass layer while exposing said electrical connection means.
Claim 10
Dependent Claim
136 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, a pH glass layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, and a cracked glass layer on said second electrolyte layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, said second glass layer having a coefficient of thermal expansion mismatched with respect to said second electrolyte layer to produce differential expansion therebetween.
Claim 11
Dependent Claim
136 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, a pH glass layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, and a cracked glass layer on said second electrolyte layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, said second glass layer having a coefficient of thermal expansion mismatched with respect to said second electrolyte layer to produce differential expansion therebetween.
Claim 12
Dependent Claim
28 words
A combination electrode as set forth in claim 8 wherein said first and second electrolyte layers are silver chloride and said first and second metallic layers are silver.
Claim 13
Dependent Claim
20 words
A combination electrode as set forth in claim 8 wherein said pH glass layer is an RF sputtered glass layer.
Claim 14
Dependent Claim
49 words
A combination electrode as set forth in claim 8 and including a thermal compensating means mounted on said insulating substrate and in thermal association therewith while being electrically insulated from said first and second metallic layers, said first and second electrolyte layers and said pH and cracked glass layers.
Claim 15
Dependent Claim
74 words
A combination electrode as set forth in claim 8 and further including first electrical connection means connected to said first metallic layer and second electrical connection means connected to said second metallic layer and encapsulating means covering said substrate, said first and second metallic layers, said first and second electrolyte layers and a portion of each of said pH glass layer and said cracked glass layer while exposing said first and second connection means.
Claim 16
Dependent Claim
84 words
A combination electrode as set forth in claim 11 and further including first electrical connection means connected to said first metallic layer, second electrical connection means connected to said second metallic layer, third electrical connection means connected to said thermal compensating means and encapsulating means encompassing said substrate, said first and second metallic layers, said first and second electrolyte layers and a portion of each of said pH glass layer and said cracked glass layer while exposing said first, second and third connection means.
Claim 17
Dependent Claim
26 words
A combination electrode as set forth in claim 8 wherein said pH glass layer and said second glass layer are each an RF sputtered glass layer.
Claim 18
Dependent Claim
114 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, a pH glass layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, and an ion conducting path layer on said second electrolyte layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer.
Claim 19
Dependent Claim
114 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, a pH glass layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer, and an ion conducting path layer on said second electrolyte layer and electrically insulated from said first metallic layer, said first electrolyte layer and said pH glass layer.
Claim 20
Dependent Claim
74 words
A combination electrode as set forth in claim 15 and further including first electrical connection means connected to said first metallic layer, second electrical connection means connected to said second metallic layer and encapsulating means encompassing said substrate, said first and second metallic layers, said first and second electrolyte layers and a portion of each of said pH glass layer and said ion conducting path layer while exposing said first and second conduction means.
Claim 21
Dependent Claim
35 words
An ion concentration measuring electrode comprising an electrically insulating substrate, a metallic layer on said substrate, a solid electrolyte layer on said metallic layer, and an RF sputtered ion selective layer on said last-mentioned layer.
Claim 22
Dependent Claim
35 words
An ion concentration measuring electrode comprising an electrically insulating substrate, a metallic layer on said substrate, a solid electrolyte layer on said metallic layer, and an RF sputtered ion selective layer on said last-mentioned layer.
Claim 23
Dependent Claim
50 words
An ion concentration measuring electrode as set forth in claim 17 wherein said ion selective layer has a coefficient of thermal expansion substantially matched to a coefficient of thermal expansion of said electrolyte layer to minimize the differential thermal expansion therebetween to maintain the integrity of said ion selective layer.
Claim 24
Dependent Claim
47 words
An ion concentration measuring electrode as set forth in claim 17 and further including electrical connection means connected to said metallic layer, and encapsulating means encompassing said substrate, said metallic layer, said electrolyte layer and a portion of said ion selective layer while exposing said connection means.
Claim 25
Dependent Claim
136 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, an ion selective layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, and first electrolyte layer and said ion selective layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer, and a cracked glass layer on said second electrolyte layer and electrically insulated from said first metallic layer, and first electrolyte layer and said ion selective layer, said cracked glass layer having a coefficient of thermal expansion mismatched with respect to said second electrolyte layer to produce differential expansion therebetween.
Claim 26
Dependent Claim
136 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, an ion selective layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, and first electrolyte layer and said ion selective layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer, and a cracked glass layer on said second electrolyte layer and electrically insulated from said first metallic layer, and first electrolyte layer and said ion selective layer, said cracked glass layer having a coefficient of thermal expansion mismatched with respect to said second electrolyte layer to produce differential expansion therebetween.
Claim 27
Dependent Claim
27 words
A combination electrode as set forth in claim 20 wherein said ion selective layer is an RF sputtered layer having a thickness of 10 to 10,000 Angstroms.
Claim 28
Dependent Claim
75 words
A combination electrode as set forth in claim 20 and further including first electrical connection means connected to said first metallic layer, second electrical connection means connected to said second metallic layer and an encapsulating means encompassing said substrate, said first and second metallic layers, said first and second electrolyte layers and a portion of each of said ion selective layer and said cracked glass path layer while exposing said first and second connection means.
Claim 29
Dependent Claim
25 words
A combination electrode as set forth in claim 20 wherein said ion selective layer and said cracked glass layer are each an RF sputtered layer.
Claim 30
Dependent Claim
114 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, an ion selective layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer, and an ion conducting path layer on said second electrolyte layer and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer.
Claim 31
Dependent Claim
114 words
A combination electrode comprising an electrically insulating substrate means, a first metallic layer on said substrate means, a first solid electrolyte layer on said metallic layer, an ion selective layer on said electrolyte layer, a second metallic layer on said substrate means and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer, a second solid electrolyte layer on said second metallic layer and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer, and an ion conducting path layer on said second electrolyte layer and electrically insulated from said first metallic layer, said first electrolyte layer and said ion selective layer.
Claim 32
Dependent Claim
74 words
A combination electrode as set forth in claim 24 and further including first electrical connection means connected to said first metallic layer, second electrical connection means connected to said second metallic layer and encapsulating means encompassing said substrate, said first and second metallic layers, said first and second electrolyte layers and a portion of each of said ion selective layer and said ion conducting path layer while exposing said first and second connection means.
Claim 33
Dependent Claim
26 words
A combination electrode as set forth in claim 24 wherein said ion selective layer and said ion conducting path layer are each an RF sputtered layer.
Claim 34
Dependent Claim
38 words
An ion concentration measuring electrode comprising a metallic layer, an electrolyte layer on said metallic layer and an ion selective layer deposited by RF sputtering on said electrolyte layer and having a thickness of 10 to 10,000 Angstroms.
Claim 35
Dependent Claim
38 words
An ion concentration measuring electrode comprising a metallic layer, an electrolyte layer on said metallic layer and an ion selective layer deposited by RF sputtering on said electrolyte layer and having a thickness of 10 to 10,000 Angstroms.
Claim 36
Dependent Claim
24 words
An ion concentration measuring electrode as set forth in claim 27 wherein said metallic layer is silver and said electrolyte layer is silver chloride.
Claim 37
Dependent Claim
53 words
An ion concentration measuring electrode as set forth in claim 27 and further including encapsulating means for hermetically sealing and electrically isolating all of said electrolyte layer and a portion of said ion selective layer and said metallic layer while exposing a remaining portion of said ion selective layer and said metallic layer.
Claim 38
Dependent Claim
50 words
An ion concentration measuring electrode comprising an electrolyte layer, an electrical connection means for providing an electrical connection to said electrolyte layer and an ion selective layer deposited by RF sputtering on said electrolyte layer spaced from said electrical connection means and having a thickness of 10 to 10,000 A.
Claim 39
Dependent Claim
50 words
An ion concentration measuring electrode comprising an electrolyte layer, an electrical connection means for providing an electrical connection to said electrolyte layer and an ion selective layer deposited by RF sputtering on said electrolyte layer spaced from said electrical connection means and having a thickness of 10 to 10,000 A.
Claim 40
Dependent Claim
53 words
An ion concentration measuring electrode as set forth in claim 30 and further including encapsulating means for hermetically sealing and electrically isolating all of said electrolyte layer and a portion of said ion selective layer and said connection means while exposing a remaining portion of said ion selective layer and said connection means.
Claim 41
Dependent Claim
47 words
An ion concentration measuring electrode comprising an electrolyte means for supporting an ion selective layer thereon, electrical connection means for providing an electrical connection to said electrolyte means and ion selective layer means deposited by RF sputtering on said electrolyte means spaced from said electrical connection means.
Claim 42
Dependent Claim
47 words
An ion concentration measuring electrode comprising an electrolyte means for supporting an ion selective layer thereon, electrical connection means for providing an electrical connection to said electrolyte means and ion selective layer means deposited by RF sputtering on said electrolyte means spaced from said electrical connection means.
Claim 43
Dependent Claim
55 words
An ion concentration measuring electrode comprising an electrolyte means for supporting an ion selective layer thereon, electrical connection means for providing an electrical connection to said electrolyte means and ion selective layer means deposited by RF sputtering on said electrolyte means spaced from said connection means and having a thickness of 10 to 10,000 A.
Claim 44
Dependent Claim
55 words
An ion concentration measuring electrode comprising an electrolyte means for supporting an ion selective layer thereon, electrical connection means for providing an electrical connection to said electrolyte means and ion selective layer means deposited by RF sputtering on said electrolyte means spaced from said connection means and having a thickness of 10 to 10,000 A.
Claim 45
Dependent Claim
55 words
An ion concentration measuring electrode as set forth in claim 33 and further including encapsulating means for hermetically sealing and electrically isolating all of said electrolyte means and a portion of said ion selective layer means and said connection means while exposing a remaining portion of said ion selective layer means and said connection means.
Claim 46
Dependent Claim
28 words
A reference electrode comprising a metallic layer, an electrolyte layer on said metallic layer and an ion conducting path layer on said electrolyte layer deposited by RF sputtering.
Claim 47
Dependent Claim
28 words
A reference electrode comprising a metallic layer, an electrolyte layer on said metallic layer and an ion conducting path layer on said electrolyte layer deposited by RF sputtering.
Claim 48
Dependent Claim
45 words
A reference electrode as set forth in claim 35 wherein said ion conducting path layer is a cracked glass layer having a coefficient of thermal expansion substantially mismatched with respect to a coefficient of thermal expansion of said electrolyte layer to produce differential expansion therebetween.
Claim 49
Dependent Claim
22 words
A reference electrode as set forth in claim 36 wherein said metallic layer is silver and said electrolyte layer is silver chloride.
Claim 50
Dependent Claim
38 words
A reference electrode comprising an electrolyte layer, electrical connection means for providing an electrical connection to said electrolyte layer and an ion conducting path layer on said electrolyte layer deposited by RF sputtering spaced from said connection means.
Claim 51
Dependent Claim
38 words
A reference electrode comprising an electrolyte layer, electrical connection means for providing an electrical connection to said electrolyte layer and an ion conducting path layer on said electrolyte layer deposited by RF sputtering spaced from said connection means.
Claim 52
Dependent Claim
45 words
A reference electrode as set forth in claim 38 wherein said ion conducting path layer is a cracked glass layer having a coefficient of thermal expansion substantially mismatched with respect to a coefficient of thermal expansion of said electrolyte layer to produce differential expansion therebetween.
Claim 53
Dependent Claim
77 words
A reference electrode comprising electrolyte means for supporting an ion conducting layer thereon, electrical connection means for providing an electrical connection to said electrolyte means and ion conducting path layer means on said electrolyte layer means spaced from said connection means, said ion conducting path layer means being a cracked glass layer having a coefficient of thermal expansion substantially mismatched with respect to a coefficient of thermal expansion of said electrolyte layer to produce differential expansion therebetween.
Claim 54
Dependent Claim
77 words
A reference electrode comprising electrolyte means for supporting an ion conducting layer thereon, electrical connection means for providing an electrical connection to said electrolyte means and ion conducting path layer means on said electrolyte layer means spaced from said connection means, said ion conducting path layer means being a cracked glass layer having a coefficient of thermal expansion substantially mismatched with respect to a coefficient of thermal expansion of said electrolyte layer to produce differential expansion therebetween.
Claim 55
Dependent Claim
55 words
A reference electrode as set forth in claim 40 and further including encapsulating means for hermetically sealing and electrically isolating all of said electrolyte means and a portion of said ion conducting path layer means and said connection means while exposing a remaining portion of said ion conducting path layer means and said connection means.
References Cited (Backward Citations)
US3133872A
Cited
US3498901A
Cited
US3443311A
Cited
US3718569A
Cited
US3856649A
Cited
US4053381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |