Patent CH239719A successfully refreshed from Google Patents.
US4033837A
Expired / Lapsed
US
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Plated metallic cathode
Assignee: Olin Corp
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Filing: 1976-02-24
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Granted: 1977-07-05
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Expires: 1996-02-24
Abstract
Abstract A highly conductive and corrosion resistant low hydrogen overvoltage cathode. The cathode comprises a copper substrate plated with an alloy of nickel, vanadium, and molybdenum.
Inventors
- 👤 Han C. Kuo
- 👤 Ronald L. Dotson
- 👤 Kenneth E. Woodard, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:34
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/562; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
28 words
A cathode for use in electrolytic cells comprising a copper substrate and a plating on said copper substrate, said plating being an alloy of nickel, vanadium, and molybdenum.
Claim 2
Dependent Claim
28 words
A cathode for use in electrolytic cells comprising a copper substrate and a plating on said copper substrate, said plating being an alloy of nickel, vanadium, and molybdenum.
Claim 3
Dependent Claim
34 words
The cathode of claim 1 wherein said plating comprises about 80 to about 90% by weight nickel, about 0.2 to about 1.5% by weight vanadium, and about 10 to about 20% by weight molybdenum.
Claim 4
Dependent Claim
19 words
The cathode of claim 1 wherein said plating has a thickness of between about 2 and about 30 microns.
Claim 5
Dependent Claim
57 words
The cathode of claim 1 wherein said plating is applied to said cathode structure by electrodeposition using a bath comprising an aqueous solution of the following: Nickel Sulfate: 240 to 340 g/l; Nickel Chloride: 30 to 60 g/l; Boric Acid: 20 to 40 g/l; Sodium Molybdate: 0.20 to 2.0 g/l; and Vanadium Sulfate: 0.20 to 0.80 g/l.
Claim 6
Dependent Claim
36 words
The cathode of claim 4 wherein said bath has a pH of about 3.5 to 5.5, a temperature of 20° C. to 45° C., and a current density of 20 to 80 ma/cm 2 is used.
Claim 7
Dependent Claim
17 words
The cathode of claim 1 used in electrolytic cells for the electrolysis of alkali metal chloride solutions.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |