US3192071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cell electrodes containing fibrous graphite and process of making same
Assignee: Union Carbide Corp
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Filing: 1960-12-27
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Granted: 1965-06-29
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Albert F Vinal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:28
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/624; H01M4/625; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A CELL ELECTRODE COMPRISING FROM ABOUT 20 TO ABOUT 40 PARTS BY WEIGHT OF COMMINUTED CARBONACEOUS PARTICLES, FROM ABOUT 60 TO ABOUT 80 PARTS BY WEIGHT OF FINELY DIVIDED DEPOLARIZING PARTICLES AND FROM ABOUT 1 TO ABOUT 5 PERCENT BY WEIGHT OF GRAPHITE FIBERS BASED ON THE WEIGHT OF THE DEPOLARIZER AND CARBONACEOUS PARTICLES, THE FILAMENTS OF SAID FIBERS HAVING A DIAMETER IN THE RANGE OF ABOUT 5 TO ABOUT 25 MICRONS, A TENSILE STRENGTH IN EXCESS OF 40,000 POUNDS PER SQUARE INCH AND A SPECIFIC RESISTANCE RANGING FROM ABOUT 1800 TO ABOUT 5500 MICRO-OHM-CENTIMETERS, SAID FIBERS CONSTITUTING A SUBSTANTIALLY CONTINUOUS MATRIX FOR SAID DEPOLARIZING AND CARBONACEOUS PARTICLES.
Claim 2
Dependent Claim
108 words
A CELL ELECTRODE COMPRISING FROM ABOUT 20 TO ABOUT 40 PARTS BY WEIGHT OF COMMINUTED CARBONACEOUS PARTICLES, FROM ABOUT 60 TO ABOUT 80 PARTS BY WEIGHT OF FINELY DIVIDED DEPOLARIZING PARTICLES AND FROM ABOUT 1 TO ABOUT 5 PERCENT BY WEIGHT OF GRAPHITE FIBERS BASED ON THE WEIGHT OF THE DEPOLARIZER AND CARBONACEOUS PARTICLES, THE FILAMENTS OF SAID FIBERS HAVING A DIAMETER IN THE RANGE OF ABOUT 5 TO ABOUT 25 MICRONS, A TENSILE STRENGTH IN EXCESS OF 40,000 POUNDS PER SQUARE INCH AND A SPECIFIC RESISTANCE RANGING FROM ABOUT 1800 TO ABOUT 5500 MICRO-OHM-CENTIMETERS, SAID FIBERS CONSTITUTING A SUBSTANTIALLY CONTINUOUS MATRIX FOR SAID DEPOLARIZING AND CARBONACEOUS PARTICLES.
Claim 3
Independent Claim
68 words
A METHOD FOR MANUFACTURING ELECTRODES COMPRISING FORMING A DRY MIX CONTAINING FROM 60 TO 80 PARTS BY WEIGHT OF A DEPOLARIZER, FROM ABOUT 20 TO ABOUT 40 PARTS BY WEIGHT OF CONDUCTIVE CARBON PARTICLES AND FROM ABOUT 1 TO ABOUT 5 PERCENT BY WEIGHT OF GRAPHITE FIBERS BASED ON THE DEPOLARIZER-CARBON MIXTURE, COMPRESSING SAID MIX ONTO A SUPPORT, MOISTENING THE RESULTING FLAT PLATE AND RE-COMPRESSING SAID MOISTENED PLATE.
Claim 4
Independent Claim
68 words
A METHOD FOR MANUFACTURING ELECTRODES COMPRISING FORMING A DRY MIX CONTAINING FROM 60 TO 80 PARTS BY WEIGHT OF A DEPOLARIZER, FROM ABOUT 20 TO ABOUT 40 PARTS BY WEIGHT OF CONDUCTIVE CARBON PARTICLES AND FROM ABOUT 1 TO ABOUT 5 PERCENT BY WEIGHT OF GRAPHITE FIBERS BASED ON THE DEPOLARIZER-CARBON MIXTURE, COMPRESSING SAID MIX ONTO A SUPPORT, MOISTENING THE RESULTING FLAT PLATE AND RE-COMPRESSING SAID MOISTENED PLATE.
References Cited (Backward Citations)
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Cited
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US2475282A
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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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |