Patent US4224384A successfully refreshed from Google Patents.
US4224384A
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Silver catalyzed manganese dioxide hydrogen gas absorber
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1975-09-30
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Granted: 1980-09-23
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Expires: 1995-09-30
Abstract
Abstract The disclosure of this application is directed to silver catalyzed manganese dioxide which is useful as a hydrogen gas absorber. The silver catalyzed manganese dioxide of this invention can be formed into a shaped article of desired configuration, inserted into an electrochemical cell such as a battery, which is subsequently sealed, to absorb hydrogen gas evolved within the cell. Absorption of hydrogen gas by the silver catalyzed manganese dioxide prevents excessive build-up of gas pressure within the sealed cell thus minimizing the possibility of rupture and complete failure of the cell.
Inventors
- 👤 Akiya Kozawa
- 👤 Karl V. Kordesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:47
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/52; B; B01; B01D; B01D53/00; B01D53/02; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
In an electrochemical cell having an anode, a cathode, an electrolyte and a hydrogen gas absorber, the improvement wherein the active hydrogen gas absorber component of the hydrogen gas absorber consists of silver catalyzed manganese dioxide.
Claim 2
Dependent Claim
36 words
In an electrochemical cell having an anode, a cathode, an electrolyte and a hydrogen gas absorber, the improvement wherein the active hydrogen gas absorber component of the hydrogen gas absorber consists of silver catalyzed manganese dioxide.
Claim 3
Dependent Claim
26 words
The electrochemical cell of claim 1 wherein the silver content of the active hydrogen gas absorber component is about 0.5 to about 30 percent by weight.
Claim 4
Dependent Claim
26 words
The electrochemical cell of claim 2 wherein the silver content of the active hydrogen gas absorber component is about 1 to about 10 percent by weight.
References Cited (Backward Citations)
US2462998A
Cited
US2422045A
Cited
US3117033A
Cited
US3424617A
Cited
US3700605A
Cited
US3893870A
Cited
US3925100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |