US3915838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodes for electrochemical processes
Assignee: Imperial Chemical Industries Ltd
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Filing: 1972-03-15
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Granted: 1975-10-28
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Expires: 1992-03-15
Abstract
Abstract An electrode for use in electrochemical processes which comprises a support of a film-forming metal carrying a coating of smooth vitreous appearance which coating comprises a layer of an operative electrode material and superimposed thereon a layer of an oxide of a film-forming metal. The electrode is made by a process which comprises forming on the surface of a support of a film-forming metal a layer of an operative electrode material, applying over the layer a coating comprising a thermally decomposable organo-compound of a film-forming metal in a liquid vehicle and heating the coating so as to convert the organocompound of the film-forming metal to an oxide of the filmforming metal.
Inventors
- 👤 Denis Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:30
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
80 words
AN ELECTRODE FOR USE IN AN ELECTROCHEMICAL PROCESS WHICH COMPRISES A SUPPORT OF A FILM-FORMING METAL CARRYING A COATING OF SMOOTH VITEROUS APPEARANCE WHICH COATING COMPRISES A LAYER OF AN OPERATIVE ELECCTRODE MATERIAL AND SUPERIMPOSED THEREON A LAYER OF AN OXIDE OF A FILM-FORMING METAL-SAID OPERATIVE ELECTRODE MATERIAL COMPRISING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF METALS AND METAL COMPOUNDS WHICH ARE RESISTANT TO ELECTROCHEMICAL DISSOLURION IN SAID ELECTROCHEMICAL PROCESS AND WHICH WILL FUNCTION AS AN ELECTRODE THEREIN.
Claim 2
Dependent Claim
80 words
AN ELECTRODE FOR USE IN AN ELECTROCHEMICAL PROCESS WHICH COMPRISES A SUPPORT OF A FILM-FORMING METAL CARRYING A COATING OF SMOOTH VITEROUS APPEARANCE WHICH COATING COMPRISES A LAYER OF AN OPERATIVE ELECCTRODE MATERIAL AND SUPERIMPOSED THEREON A LAYER OF AN OXIDE OF A FILM-FORMING METAL-SAID OPERATIVE ELECTRODE MATERIAL COMPRISING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF METALS AND METAL COMPOUNDS WHICH ARE RESISTANT TO ELECTROCHEMICAL DISSOLURION IN SAID ELECTROCHEMICAL PROCESS AND WHICH WILL FUNCTION AS AN ELECTRODE THEREIN.
Claim 3
Dependent Claim
24 words
An electrode according to claim 1 wherein said operative electrode material is selected from the class consisting of platinum group metals and oxides thereof.
Claim 4
Dependent Claim
28 words
An electrode according to claim 2, wherein the support consists of titanium or an alloy based on titanium and having anodic polarisation properties comparable with those of titanium.
Claim 5
Dependent Claim
25 words
An electrode according to claim 2, wherein the operative electrode material consists of a mixture of at least one platinum group metal and oxides thereof.
Claim 6
Dependent Claim
21 words
An electrode according to claim 2, wherein the operative electrode material consists of oxides of at least one platinum group metal.
Claim 7
Dependent Claim
16 words
An electrode according to claim 2, wherein the operative electrode material consists substantially of ruthenium dioxide.
Claim 8
Dependent Claim
20 words
An electrode according to claim 2, wherein the said layer of oxide of a film-forming metal consists of titanium dioxide.
Claim 9
Dependent Claim
81 words
An electrode according to claim 1 wherein said support comprises a film-forming metal selected from the group consisting of titanium, zirconium, niobium, tantalum and tungsten or an alloy consisting principally of one of these metals, a layer of an operative electrode material resistant to electrochemical dissolution on said support, and an oxide of said film-forming metal superimposed on said layer, said operative electrode material being at least one member of the class consisting of the platinum group metals and oxides thereof.
References Cited (Backward Citations)
US3458423A
Cited
US3616302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |