US3773555A
Expired / Lapsed
US
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Method of making an electrode
Assignee: ELECTRODE Corp A DE CORP
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Filing: 1970-12-14
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Granted: 1973-11-20
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Expires: 1990-12-14
Abstract
Abstract A method of manufacturing an electrode in which there is chemically or electrically deposited on to a film-forming metal base an oxide of a film-forming metal from a solution containing ions of the film-forming metal, followed by the application of a coating containing a platinum group metal or oxide.
Inventors
- 👤 J Cotton
- 👤 P Hayfeeld
- 👤 I Scholes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:35
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25B11/093
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
42 words
A method according to claim 1 comprising depositing the layer consisting of an oxide of the film-forming metal onto said surface before applying the layer containing a metal of the platinum group or an oxide of a metal of the platinum group.
Claim 2
Dependent Claim
25 words
A method according to claim 1 comprising depositing said oxide of the film-forming metal on top of a previously deposited electrically conductive electrolyte resistant layer.
Claim 3
Dependent Claim
26 words
A method according to claim 1 wherein said oxide is deposited from the solution by chemically decomposing in the solution a compound containing the film-forming metal.
Claim 4
Dependent Claim
18 words
A method according to claim 1 wherein said oxide is deposited from the solution by electrolyzing the solution.
Claim 5
Dependent Claim
21 words
A method according to any claim 1 wherein the surface of the electrode base is etched before applying any layer thereto.
Claim 6
Dependent Claim
18 words
A method according to claim 1 wherein the said firing takes place in an oxygen-containing atmosphere at 450-700*C.
Claim 7
Dependent Claim
13 words
A method according to claim 7 wherein said platinum group metal comprises ruthenium.
Claim 8
Dependent Claim
12 words
A method according to claim 1 wherein said oxide is titanium dioxide.
Claim 9
Dependent Claim
73 words
A method according to claim 1 which comprises immersing a titanium electrode base in heated sulphuric acid containing titanium ions until a coating of titanium oxide is chemically deposited on said base, withdrawing the base from said solution, removing any loose coating and drying the base, then applying a paint containing a decomposable ruthenium salt on said titanium oxide layer and baking until a layer of ruthenium oxide is deposited on said coating.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |