US4197367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous manganese electrode(s)
Assignee: Dow Chemical Co
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Filing: 1978-09-05
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Granted: 1980-04-08
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Expires: 1998-09-05
Abstract
Abstract A catalytically-active electrode, especially well suited for the electroreduction of oxygen in alkaline media, is comprised at least partially of a substantial proportion of finely comminutated, particulate metallic manganese fabricated in a porous body form of structure so as to retain its essential elemental integrity or character.
Inventors
- 👤 Gary A. Deborski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:57
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A metallic electrode body comprising an aggregate of metallic particles at least 5 weight % of which are manganese; said particles being substantially in their elemental form and having an average diameter of no more than about 50 microns; said particles being positioned in relation to each other to form interstitial passageways, said passageways having diameters from about 0.1 microns to about 12 microns; said passageways occupying from about 30% to about 90% of the volume of the body.
Claim 2
Dependent Claim
79 words
A metallic electrode body comprising an aggregate of metallic particles at least 5 weight % of which are manganese; said particles being substantially in their elemental form and having an average diameter of no more than about 50 microns; said particles being positioned in relation to each other to form interstitial passageways, said passageways having diameters from about 0.1 microns to about 12 microns; said passageways occupying from about 30% to about 90% of the volume of the body.
Claim 3
Dependent Claim
13 words
The electrode of claim 1 wherein the metallic particles consist essentially of manganese.
Claim 4
Dependent Claim
18 words
The electrode of claim 1 wherein the metallic particles are an admixture of nickel particles and manganese particles.
Claim 5
Dependent Claim
23 words
The electrode of claim 3 wherein the admixture of Ni particles and Mn particles contains at least about 5 weight percent Mn particles.
Claim 6
Dependent Claim
23 words
The electrode of claim 3 wherein the admixture of Ni particles and Mn particles contains at least about 30 weight percent Mn particles.
Claim 7
Dependent Claim
23 words
The electrode of claim 3 wherein the admixture of Ni particles and manganese particles contains at least about 50 weight percent Mn particles.
Claim 8
Dependent Claim
22 words
The electrode of claim 1 wherein the interstitial passageways occupy from about 65% to about 85% of the volume of the body.
References Cited (Backward Citations)
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |