Patent US4725346A successfully refreshed from Google Patents.
US4725346A
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Electrolyte assembly for oxygen generating device and electrodes therefor
Assignee: CARAMATEC Inc
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Filing: 1986-07-25
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Granted: 1988-02-16
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Expires: 2006-07-25
Abstract
Abstract An electrochemical oxygen generating device employing oxygen-conducting metal oxide electrolyte and a silver or silver alloy containing non-porous electrode is disclosed.
Inventors
- 👤 Ashok V. Joshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:50
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/02; C25B9/00; C25B9/17
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
An electrolyte assembly for an electrochemical oxygen generation device comprising: an electrolyte comprising zirconia, hafnia, ceria or bismuth oxide, said electrolyte having a pair of opposed surfaces with a relatively thin wall of electrolyte separating said opposed surfaces; a pair of substantially continuous, substantially non-porous, substantially sintered, thin electrodes permeable to oxygen molecules covering a substantial portion of said electrolyte opposed surfaces, said electrodes comprised of silver or a silver alloy having a substantial silver content.
Claim 2
Dependent Claim
76 words
An electrolyte assembly for an electrochemical oxygen generation device comprising: an electrolyte comprising zirconia, hafnia, ceria or bismuth oxide, said electrolyte having a pair of opposed surfaces with a relatively thin wall of electrolyte separating said opposed surfaces; a pair of substantially continuous, substantially non-porous, substantially sintered, thin electrodes permeable to oxygen molecules covering a substantial portion of said electrolyte opposed surfaces, said electrodes comprised of silver or a silver alloy having a substantial silver content.
Claim 3
Dependent Claim
22 words
The electrolyte assembly of claim 1 wherein said electrolyte has a wall thickness of from about 0.5 millimeters to about 2.0 millimeters.
Claim 4
Dependent Claim
11 words
The electrolyte assembly of claim 1 wherein said electrolyte is zirconia.
Claim 5
Dependent Claim
12 words
The electrolyte assembly of claim 1 wherein said electrolyte is bismuth oxide.
Claim 6
Dependent Claim
15 words
The electrolyte assembly of claim 1 wherein said electrodes contain at least about 50% silver.
Claim 7
Dependent Claim
16 words
The electrolyte assembly of claim 1 wherein said electrodes are opposed electrolyte surfaces are substantially coextensive.
Claim 8
Dependent Claim
17 words
The electrolyte assembly of claim 1 wherein said electrodes are at least about one micron in thickness.
Claim 9
Dependent Claim
20 words
The electrolyte assembly of claim 7 wherein said electrodes have a thickness of about six microns to about 20 microns.
Claim 10
Dependent Claim
16 words
The electrolyte assembly of claim 1 wherein each of said electrodes have a substantially uniform thickness.
Claim 11
Dependent Claim
15 words
The electrolyte assembly of claim 1 wherein said electrodes are substantially the same in thickness.
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) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |