Patent US4486278A successfully refreshed from Google Patents.
US4486278A
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US
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Cathode and electrolysis
Assignee: AGC Inc
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Filing: 1983-07-08
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Granted: 1984-12-04
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Expires: 2003-07-08
Abstract
Abstract A gas evolution cathode comprises a rough surface layer on a liquid non-permeable substrate and a fine electron non-conductive material which is discontinuously, uniformly distributed on said rough, surface layer.
Inventors
- 👤 Yoshio Oda
- 👤 Hiroshi Otouma
- 👤 Eiji Endoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:31
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/046; C25B1/00; C25B1/01; C25B1/34; C25B1/46; C25B11/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A method of electrolyzing an aqueous solution of an alkali metal halide, sea see water, water or a hydrogen halide, which comprises: conducting said electrolysis an an electrolysis device, the cathode of which is a gas evolution cathode constructed of a liquid non-permeable substrate having a rough surface layer which is formed by the deposition of electrochemically active particles on said liquid non-permeable substrate, said rough surface layer having a fine electron non-conductive material discontinuously, but uniformly dispersed thereon.
Claim 2
Independent Claim
79 words
A method of electrolyzing an aqueous solution of an alkali metal halide, sea see water, water or a hydrogen halide, which comprises: conducting said electrolysis an an electrolysis device, the cathode of which is a gas evolution cathode constructed of a liquid non-permeable substrate having a rough surface layer which is formed by the deposition of electrochemically active particles on said liquid non-permeable substrate, said rough surface layer having a fine electron non-conductive material discontinuously, but uniformly dispersed thereon.
Claim 3
Dependent Claim
32 words
The method according to claim 1, wherein said electron non-conductive material is distributed in an amount of 0.3-10 cc per m 2 of the apparent surface area of said rough surface layer.
Claim 4
Dependent Claim
15 words
The method according to claim 1, wherein said electron non-conductive material is an organic polymer.
Claim 5
Dependent Claim
38 words
The method according to claim 1, wherein said rough surface layer has a thickness of 1-1000μ and the density of projections or voids of said porous surface layer ranges from 10 4 -10 12 per cm 2 .
Claim 6
Dependent Claim
70 words
The method according to claim 1, wherein said electrochemically active particles are made of an alloy of a first metal selected from the group consisting of Ni, Co, Ag, Pt, Pd, Fe and Cu and a second metal selected from the group consisting of Al, Zn, Mg, Sn, Si and Sb or a leached alloy obtained by leaching at least a part of said second metal component from said alloy.
Claim 7
Dependent Claim
15 words
The method according to claim 2, wherein said electron non-conductive material is an organic polymer.
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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |