US4075070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode material
Assignee: PPG Industries Inc
•
Filing: 1976-06-09
•
Granted: 1978-02-21
•
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 09:16
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)
US3070468A
Cited
US3074829A
Cited
US3378671A
Cited
US3751296A
Cited
US3622406A
Cited
US3679403A
Cited
US3706644A
Cited
US3804740A
Cited
US3993453A
Cited
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 |