US3616445A
Expired / Lapsed
US
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Titanium or tantalum base electrodes with applied titanium or tantalum oxide face activated with noble metals or noble metal oxides
Assignee: ELECTRODE Corp A DE CORP
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Filing: 1967-12-14
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Granted: 1971-10-26
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Expires: 1987-12-14
Abstract
Abstract Describes a titanium or tantalum base electrode having a protective and electrocatalytic layer applied to the faces exposed to the electrolyte, said protective and electrocatalytic layer consisting of mixtures of solid solutions of valve metal oxides and platinum group and noble metals as such or in the form of oxides and/or oxyhalides.
Inventors
- 👤 Giuseppe Bianchi
- 👤 Vittorio Denora
- 👤 Patrizio Gallone
- 👤 Antonio Nidola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:53
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/46; C25B11/00; C25B11/04; C25B11/042; C25B11/051; C25B11/055; C25B11/057; C25B11/061; C25B11/063; C25B11/073; C25B11/091; C25B11/093
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
27 words
The electrode of claim 1 in which the minor portion contains iridium and the iridium is in substantially equal amounts with the metal in the ruthenium oxide.
Claim 2
Dependent Claim
94 words
As a product of manufacture, a titanium base electrode in mesh form having a titanium oxide coating with a mixture of ruthenium oxide and one metal from the group consisting of iridium and gold extending through the coating and capable of conducting current from the titanium base through said coating to the exposed surface of said coating, said coating being formed on said base from a solution containing a titanium and a ruthenium compound and a compound from the group consisting of an iridium compound and a gold compound and baked on said base.
Claim 3
Dependent Claim
43 words
The product of claim 3 in which the metal in the ruthenium oxide and the metal compound from the group consisting of iridium and gold constitute from about 20 to about 85 percent of the weight of the metal in the titanium oxide.
Claim 4
Dependent Claim
45 words
The product of claim 3 in which the metal is iridium, said metal and the metal in the ruthenium oxide are in approximately equal amounts and constitute from about 20 to about 85 percent of the weight of the metal in the titanium oxide coating.
Claim 5
Dependent Claim
18 words
The product of claim 3 in which the coating is on all sides of the titanium base electrode.
Claim 6
Dependent Claim
30 words
The product of claim 3 in which the coating is applied in a plurality of layers and the electrode is heated in an oxidizing atmosphere after each layer is applied.
Claim 7
Dependent Claim
107 words
As a product of manufacture, an electrode consisting of a core of solid massive substantially nonporous valve metal from the group consisting of titanium and tantalum in mesh form, a substantially nonporous oxide layer of the same metal on said core in mixture with ruthenium oxide and a metal from the group consisting of iridium and gold, said layer being formed by applying a solution containing a compound from the group consisting of a titanium compound and a tantalum compound, a ruthenium compound and a compound selected from the group consisting of an iridium compound and a gold compound onto said core and baking on said core.
Claim 8
Dependent Claim
50 words
The product of claim 8 in which the oxide from the group consisting of titanium and tantalum oxides, the ruthenium oxide and the metal from the group consisting of iridium and gold are mixed together as chloride and applied to the core and baked on the core under air circulation.
Claim 9
Dependent Claim
106 words
As a product of manufacture, an electrode comprising a core of titanium and a conducting cover coating over said core consisting of (a) titanium oxide, (b) ruthenium oxide and (c) a metal from the group consisting of iridium and gold, said coating being formed by applying a solution containing a titanium compound, a ruthenium compound and a compound from the group consisting of an iridium compound and a gold compound onto said core and baking thereon, said coating being in multiple layers on said core and the metal in the titanium compound constituting more than 50 percent of the weight of the metals in 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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |