Patent US4075070A successfully refreshed from Google Patents.
US4075070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode material
Assignee: PPG Industries Inc
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Filing: 1976-06-09
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Granted: 1978-02-21
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Expires: 1996-06-09
Abstract
Abstract Disclosed is an improved method of electrolysis utilizing an electrode fabricated from an alloy of titanium and a rare earth metal. The electrode may be a cathode, or, when having a suitable electrocatalytic coating, an anode, or even a bipolar electrode with anodic and cathodic regions. Also disclosed are electrolytic cells containing such a bipolar electrode, and electrolytic cells containing electrodes fabricated of alloys of titanium and rare earth metals.
Inventors
- 👤 Donald W. Du Bois
- 👤 William B. Darlington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:28
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/055; C25B11/057; C25B11/061; C22; C22C; C22C14/00; C25B11/042; C25B11/046; C25B11/073; C25B11/091
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
In a method of electrolysis where an electrical current is passed from an anode through an aqueous electrolyte to a metal cathode whereby to evolve hydrogen at a surface of said metal cathode, the improvement wherein the surface of the metal cathode is an alloy of titanium and a rare earth metal.
Claim 2
Dependent Claim
52 words
In a method of electrolysis where an electrical current is passed from an anode through an aqueous electrolyte to a metal cathode whereby to evolve hydrogen at a surface of said metal cathode, the improvement wherein the surface of the metal cathode is an alloy of titanium and a rare earth metal.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said rare earth metal is yttrium.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein said alloy comprises from about 0.01 to about 1.0 weight percent yttrium.
Claim 5
Dependent Claim
49 words
In a method of electrolysis where an electrical current is passed from an anode through an aqueous electrolyte to a metal cathode whereby to evolve hydrogen at a surface of said metal cathode, the improvement wherein the surface of said metal cathode comprises an alloy of titanium and yttrium.
Claim 6
Dependent Claim
49 words
In a method of electrolysis where an electrical current is passed from an anode through an aqueous electrolyte to a metal cathode whereby to evolve hydrogen at a surface of said metal cathode, the improvement wherein the surface of said metal cathode comprises an alloy of titanium and yttrium.
References Cited (Backward Citations)
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US3751296A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |