Patent US1329537A successfully refreshed from Google Patents.
US3604985A
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Coulometric device with nonconductive inorganic electrode substrate
Assignee: Sprague Electric Co
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Filing: 1970-02-02
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Granted: 1971-09-14
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Expires: 1990-02-02
Abstract
Abstract A coulometric cell employs a nonconductive inorganic envelope containing an electrolyte and an expansion bubble. First and second spaced electrode members extend from outside of said envelope, through the wall thereof and into said electrolyte. Each electrode member comprises a nonconductive inorganic substrate having at least the same coefficient of thermal expansion as that of the inorganic envelope. Each substrate carries a thin conductive film which extends from within to outside of said envelope. The envelope is bonded in fluidtight arrangement about the periphery of the electrode members where they pass through the wall thereof.
Inventors
- 👤 David B Peck
- 👤 Walter W Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:56
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
26 words
The cell of claim 1 wherein said nonconductive, inorganic envelope and substrates are of a member selected from the group consisting of a glass and ceramic.
Claim 2
Dependent Claim
57 words
a conductive material having an electrochemically deplatable metal deposited thereon, said conductive material being more cathodic than said deplatable metal; the thin conductive film of said second electrode member being selected from the group consisting of: a. the same dEplatable metal employed on said first electrode member; b. a conductive material more cathodic than said deplatable metal.
Claim 3
Dependent Claim
52 words
The cell of claim 2 wherein said electrochemically deplatable metal is selected from the group consisting of zinc, cadmium, cobalt, silver, nickel, tin, copper and lead, and said conductive material more cathodic than said deplatable metal is one selected from the group consisting of carbon, boron carbide, rhodium, palladium, platinum and gold.
Claim 4
Dependent Claim
23 words
The cell of claim 3 wherein said cell has expansion bubble trapping means to keep said bubble out of contact with said electrodes.
Claim 5
Dependent Claim
19 words
The cell of claim 3 wherein said thin conductive film of said first and second electrodes are both silver.
Claim 6
Dependent Claim
33 words
The cell of claim 3 wherein the thin conductive film of said first electrode member is silver and of said second electrode is a member of the group consisting of gold and platinum.
References Cited (Backward Citations)
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US3119754A
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US3395402A
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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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |