Patent US4465580A successfully refreshed from Google Patents.
US4465580A
Expired / Lapsed
US
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Cathode for use in electrolysis
Assignee: ThyssenKrupp Nucera Japan Ltd
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Filing: 1979-02-02
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Granted: 1984-08-14
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Expires: 1999-02-02
Abstract
Abstract A cathode for use in electrolysis comprising (1) a corrosion-resistant electrically conductive substrate; and (2) a coating thereon of (a) nickel or an alloy of nickel, and (b) fine particles of a platinum-group metal, a platinum-group metal oxide or a mixture thereof uniformly dispersed in the nickel or the alloy of nickel, the particles being present in the coating in an amount of about 0.1% to about 50% by weight; and a method for the production thereof.
Inventors
- 👤 Kazuki Kasuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:17
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
A cathode for use in electrolysis comprising: (1) a corrosion-resistant electrically conductive substrate; and (2) a non-porous coating formed thereon, said coating comprising (a) Ni or an Ni alloy and (b) fine particles of a cathode activating material comprising at least one platinum-group metal oxide selected from the group consisting of Pt, Ru, Ir, Rh, Pd and Os oxides, uniformly dispersed in said Ni or Ni alloy (a), said particles having a particle diameter of about 150 microns or smaller and being present in an amount of about 0.1% to about 50% by weight.
Claim 2
Dependent Claim
94 words
A cathode for use in electrolysis comprising: (1) a corrosion-resistant electrically conductive substrate; and (2) a non-porous coating formed thereon, said coating comprising (a) Ni or an Ni alloy and (b) fine particles of a cathode activating material comprising at least one platinum-group metal oxide selected from the group consisting of Pt, Ru, Ir, Rh, Pd and Os oxides, uniformly dispersed in said Ni or Ni alloy (a), said particles having a particle diameter of about 150 microns or smaller and being present in an amount of about 0.1% to about 50% by weight.
Claim 3
Dependent Claim
23 words
The cathode of claim 1, wherein the cathode activating material is at least one platinum-group metal and at least one platinum-group metal oxide.
Claim 4
Dependent Claim
25 words
The cathode of claim 1 or 2, wherein the coating (2) on the substrate (1) has a thickness of about 1 to about 20 microns.
Claim 5
Dependent Claim
27 words
The cathode of claim 1 or 2, wherein the amount of the cathode activating material in the coating (2) is about 1 to about 10% by weight.
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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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |