US4172022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical sensor of hydrogen and hydrogen-containing reducing agents
Assignee: Individual
•
Filing: 1977-05-11
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Granted: 1979-10-23
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Expires: 1997-05-11
Abstract
Abstract The electrochemical sensor of hydrogen and hydrogen-containing reducing agents comprises a cathode which is coal activated with a selective organic catalyst for electrochemical reduction of oxygen, an anode based on the metals of the platinum group and an acidic polymeric electrolyte disposed therebetween. The proposed sensor is capable of operating in a mixture of oxygen with hydrogen or a hydrogen-containing reducing agent without separation of the components. The sensitivity of the sensor to hydrogen is 10 -3 to 10 -4 percent by volume.
Inventors
- 👤 Nikolai S. Lidorenko
- 👤 Grigory F. Muchnik
- 👤 Alexandr G. Polyak
- 👤 Vasily A. Vakhonin
- 👤 Vyacheslav M. Krylov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:53
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0027; G01N33/0036; G01N33/005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
78 words
An electrochemical sensor of hydrogen and hydrogen-containing reducing agents adapted to operate as a current source in a mixture of oxygen, hydrogen or hydrogen-containing reducing agents directly without preliminary separation of the components comprising: a cathode of coal powder in contact with a selective organic catalyst from the group consisting of chloroquinones, redox polymers; and polymer or monomer phthalocyanines of a transition metal; a platinum anode; and an acidic polymeric electrolyte disposed between the cathode and the anode.
Claim 2
Dependent Claim
78 words
An electrochemical sensor of hydrogen and hydrogen-containing reducing agents adapted to operate as a current source in a mixture of oxygen, hydrogen or hydrogen-containing reducing agents directly without preliminary separation of the components comprising: a cathode of coal powder in contact with a selective organic catalyst from the group consisting of chloroquinones, redox polymers; and polymer or monomer phthalocyanines of a transition metal; a platinum anode; and an acidic polymeric electrolyte disposed between the cathode and the anode.
Claim 3
Dependent Claim
12 words
An electrochemical sensor according to claim 1, wherein said catalyst is tetrachloroparabenzoquinone.
Claim 4
Dependent Claim
17 words
An electrochemical sensor according to claim 1 wherein said catalyst is a copolymer of formaldehyde and pyrocatechol.
Claim 5
Dependent Claim
18 words
An electrochemical sensor according to claim 1 wherein said catalyst is a phthalocyanine polymer of a transition metal.
Claim 6
Dependent Claim
14 words
An electrochemical sensor according to claim 4 wherein said catalyst is polymeric iron phthalocyanine.
Claim 7
Dependent Claim
17 words
An electrochemical sensor according to claim 1 wherein said catalyst is monomeric phthalocyanines of a transition metal.
Claim 8
Dependent Claim
14 words
An electrochemical sensor according to claim 6 wherein said catalyst is monomeric iron phthalocyanine.
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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) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |