Patent US4037752A successfully refreshed from Google Patents.
Patent US4152240A successfully refreshed from Google Patents.
US4152240A
Expired / Lapsed
US
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Plated metallic cathode with porous copper subplating
Assignee: Olin Corp
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Filing: 1978-05-01
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Granted: 1979-05-01
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Expires: 1998-05-01
Abstract
Abstract A highly conductive and corrosion resistant low hydrogen overvoltage cathode. The cathode comprises a copper substrate plated with an alloy of nickel and molybdenum.
Inventors
- 👤 Han C. Kuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:29
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25D5/00; C25D5/10; C25D5/34; C25D5/60; C25D5/605; C25D5/615; C25D5/617; C25D5/623; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
47 words
A low overvoltage cathode, comprising: (a) a conductive metal substrate; (b) a porous coating of dendritic copper of from about 50 to about 200 microns in thickness on said substrate; and (c) a coating of a low overvoltage alloy of molybdenum on said dendritic copper coated substrate.
Claim 2
Dependent Claim
47 words
A low overvoltage cathode, comprising: (a) a conductive metal substrate; (b) a porous coating of dendritic copper of from about 50 to about 200 microns in thickness on said substrate; and (c) a coating of a low overvoltage alloy of molybdenum on said dendritic copper coated substrate.
Claim 3
Dependent Claim
10 words
The cathode of claim 1 wherein said substrate is copper.
Claim 4
Dependent Claim
20 words
The cathode of claims 1 or 2 wherein said low overvoltage metal alloy is an alloy of nickel and molybdenum.
Claim 5
Dependent Claim
14 words
The cathode of claim 3 wherein said alloy contains more than 50 percent molybdenum.
Claim 6
Dependent Claim
22 words
The cathode of claims 1 or 2 wherein said dendritic copper is in the form of dendrites of 2-10 microns in diameter.
Claim 7
Dependent Claim
18 words
The cathode of claims 1 or 2 wherein said substrate is in the form of a perforated plate.
Claim 8
Dependent Claim
17 words
The cathode of claims 1 or 2 wherein said substrate is in the form of louvered mesh.
References Cited (Backward Citations)
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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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |