US3882002A
Expired / Lapsed
US
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Anode for electrolytic processes
Assignee: ELECTRODE Corp A DE CORP
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Filing: 1974-08-02
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Granted: 1975-05-06
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Expires: 1994-08-02
Abstract
Abstract An electrode, for use in electrolytic processes, comprises a valve metal substrate, such as titanium, a coating thereon of conductive tin oxide, and an outer coating of a noble metal or noble metal oxide.
Inventors
- 👤 Jr Edward H Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:57
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25B11/093
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
30 words
AN ELECTROLYTIC ANODE COMPRISING A VALVE METAL SUBSTRATE, A COATING THEREON OF CONDUCTIVE TIN OXIDE, AND AN OUTER COATING OF AT LEAST ONE OF NOBLE METAL OR NOBLE METAL OXIDE.
Claim 2
Dependent Claim
30 words
AN ELECTROLYTIC ANODE COMPRISING A VALVE METAL SUBSTRATE, A COATING THEREON OF CONDUCTIVE TIN OXIDE, AND AN OUTER COATING OF AT LEAST ONE OF NOBLE METAL OR NOBLE METAL OXIDE.
Claim 3
Dependent Claim
12 words
An electrolytic anode according to claim 1 wherein the substrate is titanium.
Claim 4
Dependent Claim
25 words
An electrolytic anode according to claim 2 wherein the conductive tin oxide comprises a mixture of tin dioxide and a minor amount of antimony oxide.
Claim 5
Dependent Claim
16 words
An electrolytic anode according to claim 2 wherein the outer coating is a noble metal oxide.
Claim 6
Dependent Claim
14 words
An electrolytic anode according to claim 4 wherein the outer coating is ruthenium oxide.
Claim 7
Dependent Claim
45 words
An electrolytic anode according to claim 5 wherein the conductive tin oxide comprises a mixture of tin oxide and between about 0.1 and about 20 percent by weight of antimony oxide, based on the total weight of said mixture when calculated as SnO2 and Sb2O3.
Claim 8
Dependent Claim
67 words
In a method of electrolyzing aqueous alkali metal chloride solutions wherein chlorine is liberated at the anode, the improvement which comprises using as said anode, a composite structure comprising a valve metal substrate, a coating of conductive tin oxide on the surface thereof, and an outer coating, on the surface of the conductive tin oxide, of at least one of a noble metal or noble metal oxide.
Claim 9
Dependent Claim
67 words
In a method of electrolyzing aqueous alkali metal chloride solutions wherein chlorine is liberated at the anode, the improvement which comprises using as said anode, a composite structure comprising a valve metal substrate, a coating of conductive tin oxide on the surface thereof, and an outer coating, on the surface of the conductive tin oxide, of at least one of a noble metal or noble metal oxide.
Claim 10
Dependent Claim
27 words
A method according to claim 7 wherein the anode comprises a titanium substrate, a coating thereon of conductive tin oxide, and an outer coating of ruthenium oxide.
Claim 11
Dependent Claim
43 words
A method according to claim 8 wherein the conductive tin oxide comprises a mixture of tin oxide and between about 0.1 and 20 percent by weight of antimony oxide, based on the total weight of the mixture when calculated as SnO2 and Sb2O3.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |