US2909586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered plate electrode with expanded-metal grid
Assignee: Accumulatoren Fabrik AG
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Filing: 1952-12-08
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Granted: 1959-10-20
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Expires: 1972-12-08
Abstract
No abstract record available.
Inventors
- 👤 Hagspihl Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1103; B22F3/1118; H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/80; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A SINTERED METAL ELECTRODE FOR ALKALINE ACCUMULATORS OF INCREASED ELECTRIC EFFICIENCY, SAID ELECTRODE HAVING A GRID OF EXPANDED METAL EMBEDDED IN THE SINTERED METAL WHEREBY THE POROSITY OF THE SINTERED BODY IS INCREASED BECAUSE OF REDUCED SINTERING SHRINKAGE AND THE RECEPTIVITY
Claim 2
Dependent Claim
41 words
A SINTERED METAL ELECTRODE FOR ALKALINE ACCUMULATORS OF INCREASED ELECTRIC EFFICIENCY, SAID ELECTRODE HAVING A GRID OF EXPANDED METAL EMBEDDED IN THE SINTERED METAL WHEREBY THE POROSITY OF THE SINTERED BODY IS INCREASED BECAUSE OF REDUCED SINTERING SHRINKAGE AND THE RECEPTIVITY
References Cited (Backward Citations)
US664438A
Cited
US1918947A
Cited
US1982485A
Cited
US2251913A
Cited
US2544112A
Cited
US2672494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |