Patent US2240599A successfully refreshed from Google Patents.
Patent US4364805A successfully refreshed from Google Patents.
US4364805A
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US
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Gas electrode operation
Assignee: Diamond Shamrock Chemicals Co
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Filing: 1981-05-08
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Granted: 1982-12-21
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Expires: 2001-05-08
Abstract
Abstract This disclosure is directed to operating gas electrodes, e.g., oxygen (air) cathodes at "blow-through" pressures of oxygen-containing gas, viz., oxygen or air pressures exceeding the pressure(s) at which bubble-through of such gas occurs, which pressures result in savings due to reduced cathode potential (voltage) during operation. Depending upon the specific oxygen (air) cathode employed, the pressures required to obtain blow-through can vary widely. Usually, however, oxygen (air) pressures of 2 to 15 psig are satisfactory to accomplish blow-through.
Inventors
- 👤 Douglas K. Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:03
CPC Classifications
C; C25; C25B; C25B15/00; C25B15/08; C25B1/00; C25B1/01; C25B1/34; C25B1/46; H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; H01M8/00; H01M8/04; H01M8/04082; H01M8/04089; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
49 words
In a method of operating a gas electrode employing an oxygen-containing gas; and a laminate oxygen cathode of a wetproofing layer containing polytetrafluoroethylene particles, an active layer containing carbon particles, and a current distributor: the improvement which comprises feeding the oxygen-containing gas to the oxygen cathode at blow-through pressure.
Claim 2
Dependent Claim
49 words
In a method of operating a gas electrode employing an oxygen-containing gas; and a laminate oxygen cathode of a wetproofing layer containing polytetrafluoroethylene particles, an active layer containing carbon particles, and a current distributor: the improvement which comprises feeding the oxygen-containing gas to the oxygen cathode at blow-through pressure.
Claim 3
Dependent Claim
12 words
A method as in claim 1 wherein said oxygen-containing gas is oxygen.
Claim 4
Dependent Claim
15 words
A method as in claim 1 wherein said oxygen-containing gas is CO 2 -free air.
Claim 5
Dependent Claim
13 words
A method as in claim 1 wherein said carbon particles contain platinum catalyst.
Claim 6
Dependent Claim
13 words
A method as in claim 1 wherein said carbon particles contain silver catalyst.
Claim 7
Dependent Claim
22 words
A method as in claim 1 wherein said oxygen-containing gas is supplied at pressures ranging from about 2 to about 15 psig.
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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |