Patent US4372118A successfully refreshed from Google Patents.
Patent US3751296A successfully refreshed from Google Patents.
US3751296A
Expired / Lapsed
US
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Electrode and coating therefor
Assignee: Chemnor Ag
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Filing: 1971-05-19
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Granted: 1973-08-07
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Expires: 1991-05-19
Abstract
Abstract An electrode for use in an electrolytic reaction. The electrode has an electrically conductive base, preferably of a film-forming metal, the outside of which is a conductive material other than a film-forming metal, such as a layer of oxide of the base metal, and which is resistant to the electrolyte. At least a portion of the surface of said base has a coating of a mixed crystal material consisting essentially of at least one oxide of a filmforming metal and at least one oxide of a platinum group metal.
Inventors
- 👤 H Beer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:28
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/02; C01B35/023; C23; C23F; C23F13/00; C23F13/02; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25B11/093; C25D; C25D13/00; C25D13/02; C25D9/00; C25D9/04; C25D9/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
33 words
An electrode according to claim 1 wherein said oxide of a film-forming metal is an oxide of a metal selected from the group consisting of aluminum, tantalum, titanium, zirconium, bismuth, tungsten and niobium.
Claim 2
Dependent Claim
33 words
An electrode according to claim 1 wherein said oxide of a platinum group metal is an oxide of a metal selected from the group consisting of palladium, platinum, rhodium, iridium, ruthenium and osmium.
Claim 3
Dependent Claim
31 words
An electrode according to claim 1 wherein the coating contains oxides of a plurality of film-forming metals selected from the group consisting of aluminum, tantalum, titanium, zirconium, bismuth, tungsten and niobium.
Claim 4
Dependent Claim
31 words
An electrode according to claim 1 wherein the coating contains oxides of a plurality of platinum group metals selected from the group consisting of palladium, platinum, rhodium, iridium, ruthenium and osmium.
Claim 5
Dependent Claim
29 words
An electrode according to claim 1 wherein the oxide of the film-forming metal is present in a proportion higher than 50 mol percent of the materials of the coating.
Claim 6
Dependent Claim
27 words
An electrode according to claim 1 wherein the coating covers at least 2 percent of the surface of the electrode adapted to be placed in an electrolyte.
Claim 7
Dependent Claim
41 words
An electrode according to claim 1 wherein the electrically conductive base is selected from the group consisting of titanium and tantalum, and the surface of said electrode has a mixed crystal material coating consisting essentially of titanium oxide and ruthenium oxide.
Claim 8
Dependent Claim
59 words
An electrode according to claim 1 wherein said oxide of a film-forming metal is titanium oxide and is present in a proportion of 70 mol percent of the material of the coating, and said oxide of a platinum group metal is ruthenium oxide and is present in a proportion of 30 mol percent of the material of the coating.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |