US3954590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iridium thin ribbon electrodes for electrochemical cells
Assignee: TA Instruments Inc
•
Filing: 1975-01-13
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Granted: 1976-05-04
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Expires: 1995-01-13
Abstract
Abstract Diffusion electrolytic moisture detection cells having either the cathode or both electrodes formed of iridium or an alloy of at least 10 wt.% iridium and a noble metal. The electrodes are from 0.1 to 1 micron in thickness and are supported on either glass or alumina.
Inventors
- 👤 Michael Czuha, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06; G01N27/07
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
An electrolytic moisture detection cell comprising a substrate, spaced apart thin ribbon metal electrodes having a thickness of from about 0.1 to about 1.0 micron attached to and supported by said substrate, said electrodes comprising an anode and a cathode, the cathode being formed of a metal consisting essentially of iridium or an alloy containing at least 10 weight percent iridium and the remainder platinum; and a hygroscopic film deposited on said substrate and filling at least a portion of the space between said anode and said cathode.
Claim 2
Dependent Claim
88 words
An electrolytic moisture detection cell comprising a substrate, spaced apart thin ribbon metal electrodes having a thickness of from about 0.1 to about 1.0 micron attached to and supported by said substrate, said electrodes comprising an anode and a cathode, the cathode being formed of a metal consisting essentially of iridium or an alloy containing at least 10 weight percent iridium and the remainder platinum; and a hygroscopic film deposited on said substrate and filling at least a portion of the space between said anode and said cathode.
Claim 3
Dependent Claim
27 words
The electrolytic moisture detection cell of claim 1 wherein said cell is a diffusion electrolytic cell and a diffusion barrier covers the electrodes and the hygroscopic film.
Claim 4
Dependent Claim
18 words
The electrolytic moisture detection cell of claim 2 wherein both of said electrodes are formed of said metal.
Claim 5
Dependent Claim
15 words
The electrolytic moisture detection cell of claim 3 wherein said metal is substantially pure iridium.
Claim 6
Dependent Claim
25 words
The electrolytic moisture detection cell of claim 2 wherein both of said electrodes are attached to and supported by a substrate of glass or alumina.
Claim 7
Dependent Claim
17 words
The electrolytic detection cell of claim 5 wherein both of said electrodes are formed of said metal.
Claim 8
Dependent Claim
14 words
The electrolytic detection cell of claim 6 wherein said metal is substantially pure iridium.
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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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |