Patent US3409474A successfully refreshed from Google Patents.
US3409474A
Expired / Lapsed
US
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Hydrogen storing electrode and process for its manufacture
Assignee: VARTA AG
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Filing: 1961-07-26
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Granted: 1968-11-05
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Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Jung Margarete
- 👤 Hanns H Kroeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:25
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/98; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A HYDROGEN STORAGE ELECTRODE STRUCTURE COMPRISING A BODY OF RANEY METAL PARTICLES AND THERMOPLASTIC SYNTHETIC RESIN, BOTH SAID METAL AND SAID RESIN BEING DISTRIBUTED THROUGHOUT SAID BODY, SAID BODY BEING POROUS TO BOTH LIQUIDS AND GASES, AND THE RATIO OF SAID RESIN TO SAID METAL BEING BETWEEN ABOUT 1:9 AND ABOUT 1:50 BY WEIGHT.
Claim 2
Dependent Claim
54 words
A HYDROGEN STORAGE ELECTRODE STRUCTURE COMPRISING A BODY OF RANEY METAL PARTICLES AND THERMOPLASTIC SYNTHETIC RESIN, BOTH SAID METAL AND SAID RESIN BEING DISTRIBUTED THROUGHOUT SAID BODY, SAID BODY BEING POROUS TO BOTH LIQUIDS AND GASES, AND THE RATIO OF SAID RESIN TO SAID METAL BEING BETWEEN ABOUT 1:9 AND ABOUT 1:50 BY WEIGHT.
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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) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |