US3356537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed silver electrode and a method for preparing it
Assignee: ESB Inc
•
Filing: 1964-05-25
•
Granted: 1967-12-05
•
Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Duddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:17
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8875; H01M4/8878; H01M4/8882; H01M4/8885; H01M4/90; H01M4/9041; H01M2004/8678; H01M2004/8689; H01M4/8647; H01M4/8652; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/53135; Y10T29/53139
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A METHOD FOR PREPARING A FOAMED SILVER ELECTRODE WHICH COMPRISES FORMING A MIXTURE OF MONOVALENT SILVER OXIDE POWDER WITH A SILICA POWDER, THE WEIGHT RATIO OF SILVER OXIDE TO SILICA RANGING FROM ABOUT 7:1 TO ABOUT 8:1 TO FORM AN ELECTRICALLY CONDUCTIVE ELECTRODE, SHAPING THE SILVER OXIDE-SILICA COMPOSITION BY COMPRESSING IT UNDER A PRESSURE RANGING FROM ABOUT 5 TO ABOUT 8 TONS PER SQUARE INCH, HEATING THE SHAPED SILVER OXIDE-SILICA COMPOSITION TO A TEMPERATURE RANGING FROM 550* C. TO ABOUT 600* C. SO AS TO DECOMPOSE SILVER OXIDE TO GENERATE OXYGEN AND PRODUCE A FOAMED STRUCTURE OF SILVER AND SILICA, AND THEREAFTER SINTERING THE FOAMED STRUCTURE AT A TEMPERATURE RANGING FROM ABOUT 950* C. TO ABOUT 1000* C., THE METHOD OF PRODUCING A FOAMED POROUS ELECTRODE IN WHICH SILVER IS PRESENT WITH SILICA AND IN WHICH THE PORES ARE INTERCONNECTED.
Claim 2
Independent Claim
140 words
A METHOD FOR PREPARING A FOAMED SILVER ELECTRODE WHICH COMPRISES FORMING A MIXTURE OF MONOVALENT SILVER OXIDE POWDER WITH A SILICA POWDER, THE WEIGHT RATIO OF SILVER OXIDE TO SILICA RANGING FROM ABOUT 7:1 TO ABOUT 8:1 TO FORM AN ELECTRICALLY CONDUCTIVE ELECTRODE, SHAPING THE SILVER OXIDE-SILICA COMPOSITION BY COMPRESSING IT UNDER A PRESSURE RANGING FROM ABOUT 5 TO ABOUT 8 TONS PER SQUARE INCH, HEATING THE SHAPED SILVER OXIDE-SILICA COMPOSITION TO A TEMPERATURE RANGING FROM 550* C. TO ABOUT 600* C. SO AS TO DECOMPOSE SILVER OXIDE TO GENERATE OXYGEN AND PRODUCE A FOAMED STRUCTURE OF SILVER AND SILICA, AND THEREAFTER SINTERING THE FOAMED STRUCTURE AT A TEMPERATURE RANGING FROM ABOUT 950* C. TO ABOUT 1000* C., THE METHOD OF PRODUCING A FOAMED POROUS ELECTRODE IN WHICH SILVER IS PRESENT WITH SILICA AND IN WHICH THE PORES ARE INTERCONNECTED.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |