US4452685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodes for electrolytic cells
Assignee: Olin Corp
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Filing: 1983-05-02
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Granted: 1984-06-05
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Expires: 2003-05-02
Abstract
Abstract An electrode for use in an electrolytic cell, and a method for producing same, wherein said electrode comprises an internal copper conductor and an external element of a second metal, at least a portion of each having contact surfaces being held in intimate contact with the other, said conductor and said element each having a conductive coating applied to the contact surface, said conductive coating comprising between about 20 and about 30 percent indium and between about 80 and about 70 percent gallium, whereby the contact resistance between said conductor and said element is reduced.
Inventors
- 👤 Kenneth E. Woodard, Jr.
- 👤 Ronald L. Dotson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:16
CPC Classifications
C; C25; C25B; C25B11/00; C25B9/00; C25B9/60; C25B9/65
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
An electrode for use in an electrolytic cell, said electrode being comprised of an internal copper conductor and an external element, said element being selected from the group consisting of titanium and nickel, at least a portion of said copper conductor having contact surfaces which are held in intimate contact with contact surfaces of said external element, said conductor and said element having at the area of contact a conductive coating between said contact surfaces of said conductor and said element, said conductive coating being comprised of a mixture of between about 20 and about 30 percent indium by weight and about 80 and about 70 percent gallium by weight, whereby the contact resistance between said conductor and said element is reduced.
Claim 2
Dependent Claim
122 words
An electrode for use in an electrolytic cell, said electrode being comprised of an internal copper conductor and an external element, said element being selected from the group consisting of titanium and nickel, at least a portion of said copper conductor having contact surfaces which are held in intimate contact with contact surfaces of said external element, said conductor and said element having at the area of contact a conductive coating between said contact surfaces of said conductor and said element, said conductive coating being comprised of a mixture of between about 20 and about 30 percent indium by weight and about 80 and about 70 percent gallium by weight, whereby the contact resistance between said conductor and said element is reduced.
Claim 3
Dependent Claim
34 words
The electrode of claim 1 wherein said conductive compound is comprised of between about 23 and about 26 percent by weight of indium and about 77 and about 74 percent by weight of gallium.
Claim 4
Dependent Claim
9 words
An electrolytic cell containing the electrode of claim 1.
Claim 5
Dependent Claim
18 words
The electrode of claim 1 wherein the titanium further has a layer of copper on said contact surface.
References Cited (Backward Citations)
US4098606A
Cited
US4222831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |