US4478696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionizable reducing and oxidizing gaseous supply means and process for catalytic barriers and electrodes
Assignee: WALTER JUDA AND/OR WALTER JUDA ASSOCIATES
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Filing: 1982-07-21
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Granted: 1984-10-23
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Expires: 2002-07-21
Abstract
Abstract This disclosure is concerned with the application of reducing or oxidizing gases, for use in electrochemical cells and the like embodying catalytic electrodes or barriers, at edge regions of such electrodes or barriers external to the cell electrolyte and the portions of electrodes or barriers contacting the electrolyte.
Inventors
- 👤 Robert J. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:34
CPC Classifications
H; H01; H01M; H01M8/00; C; C25; C25B; C25B11/00; C25B15/00; C25B15/08; C25B15/087; C25C; C25C1/00; C25C1/20; C25C7/00; C25C7/06; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
111 words
A process for introducing ionizable reducing and oxidizing gases into an electrochemical cell and the like having an electrolyte, that comprises, introducing a main portion of a catalytic electrode or barrier of gas permeable material into the electrolyte with a rim portion of the material external to the electrolyte in a chamber isolated from the electrolyte, the gas permeable material having a thickness that is small relative to its other dimensions, and flowing said gas in said chamber along said rim portion and then diffusing the gas in said gas permeable material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 2
Dependent Claim
111 words
A process for introducing ionizable reducing and oxidizing gases into an electrochemical cell and the like having an electrolyte, that comprises, introducing a main portion of a catalytic electrode or barrier of gas permeable material into the electrolyte with a rim portion of the material external to the electrolyte in a chamber isolated from the electrolyte, the gas permeable material having a thickness that is small relative to its other dimensions, and flowing said gas in said chamber along said rim portion and then diffusing the gas in said gas permeable material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 3
Dependent Claim
102 words
A process for introducing hydrogen into an electrochemical cell having an electrolyte, that comprises, introducing a main portion of a catalytic electrode or barrier of gas permeable material into the electrolyte with a rim portion of the material external to the electrolyte in a chamber isolated from the electrolyte, the gas permeable material having a thickness that is small relative to its other dimensions, and flowing hydrogen gas in said chamber along said rim portion and then diffusing the gas in said material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 4
Dependent Claim
102 words
A process for introducing hydrogen into an electrochemical cell having an electrolyte, that comprises, introducing a main portion of a catalytic electrode or barrier of gas permeable material into the electrolyte with a rim portion of the material external to the electrolyte in a chamber isolated from the electrolyte, the gas permeable material having a thickness that is small relative to its other dimensions, and flowing hydrogen gas in said chamber along said rim portion and then diffusing the gas in said material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 5
Dependent Claim
104 words
A process for introducing gaseous oxidant into an electrochemical cell having an electrolyte, that comprises, introducing a main portion of a catalytic electrode or barrier of gas permeable material into the electrolyte with a rim portion of the material external to the electrolyte in a chamber isolated from the electrolyte, the gas permeable material having a thickness that is small relative to its other dimensions, and flowing gaseous oxidant in said chamber along said rim portion and then diffusing the gaseous oxidant in said material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 6
Dependent Claim
104 words
A process for introducing gaseous oxidant into an electrochemical cell having an electrolyte, that comprises, introducing a main portion of a catalytic electrode or barrier of gas permeable material into the electrolyte with a rim portion of the material external to the electrolyte in a chamber isolated from the electrolyte, the gas permeable material having a thickness that is small relative to its other dimensions, and flowing gaseous oxidant in said chamber along said rim portion and then diffusing the gaseous oxidant in said material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 7
Dependent Claim
41 words
A process as claimed in claim 2 in which a catalytic barrier is employed and the electrolyte is a metal ion aqueous electrolyte solution, and in which the hydrogen gas induces hydrogen reduction and deposition of the metal upon said barrier.
Claim 8
Dependent Claim
18 words
A process as claimed in claim 4 and in which the cell operates without an external electrical circuit.
Claim 9
Dependent Claim
104 words
In electrochemical cell apparatus and the like including an electrolyte and operating with a gas-reducing or oxidizing catalytic electrode or barrier of gas permeable material having a thickness that is small relative to its other dimensions, means for disposing a main portion of said material within said electrolyte and a rim portion of said material external to the electrolyte in a chamber isolated from the electrolyte, and means for flowing gas in said chamber along said rim portion and diffusing the gas in said material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 10
Dependent Claim
104 words
In electrochemical cell apparatus and the like including an electrolyte and operating with a gas-reducing or oxidizing catalytic electrode or barrier of gas permeable material having a thickness that is small relative to its other dimensions, means for disposing a main portion of said material within said electrolyte and a rim portion of said material external to the electrolyte in a chamber isolated from the electrolyte, and means for flowing gas in said chamber along said rim portion and diffusing the gas in said material from the rim portion to the main portion along paths that are perpendicular to the thickness of the material.
Claim 11
Dependent Claim
17 words
Apparatus as claimed in claim 6 and in which the last-mentioned means comprises means for supplying hydrogen.
Claim 12
Dependent Claim
19 words
Apparatus as claimed in claim 6 and in which the last-mentioned means comprises means for supplying oxygen or air.
Claim 13
Dependent Claim
45 words
Apparatus as claimed in claim 7 and in which said electrolyte comprises metal ion aqueous electrolyte solution and said gas permeable material constitutes a hydrogen-gas-catalytic barrier, with the hydrogen flowing along said rim portion inducing hydrogen reduction and deposition of the metal upon said barrier.
Claim 14
Dependent Claim
16 words
Apparatus as claimed in claim 9 and in which said electrolyte is an aqueous copper solution.
Claim 15
Dependent Claim
18 words
Apparatus as claimed in claim 9 and in which said electrolyte is an aqueous noble metal ion solution.
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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) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |