US3329530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered fuel cell electrode comprising fluorine-containing monomer
Assignee: Daikin Industries Ltd
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Filing: 1965-03-24
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Granted: 1967-07-04
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 Kometani Yutaka
- 👤 Yamada Akira
- 👤 Suzue Seisuke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:33
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12479; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A FUEL CELL ELECTRODE CONSISTING ESSENTIALLY OF A COMPRESSED AND SINTERED MIXTURE, SAID MIXTURE ESSENTIALLY CONSISTING OF FROM 50 TO 95 PERCENT BY VOLUME OF AN ELECTRICALLY CONDUCTIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBON AND NICKEL, AND FROM 50 TO 5 PERCENT BY VOLUME OF COPOLYMER, SAID COPOLYMER CONSISTING ESSENTIALLY OF 70 TO 95 PERCENT BY WEIGHT OF TETRAFLUOROETHYLENE AND FROM 30 TO 5 PERCENT BY WEIGHT OF A FLUORINE-CONTAINING MONOMER OTHER THAN TETRAFLUOROETHYLENE, AND HAVING A POROSITY IN THE RANGE OF FROM 25 TO 70 PERCENT BY VOLUME IN TERMS OF
Claim 2
Dependent Claim
94 words
A FUEL CELL ELECTRODE CONSISTING ESSENTIALLY OF A COMPRESSED AND SINTERED MIXTURE, SAID MIXTURE ESSENTIALLY CONSISTING OF FROM 50 TO 95 PERCENT BY VOLUME OF AN ELECTRICALLY CONDUCTIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBON AND NICKEL, AND FROM 50 TO 5 PERCENT BY VOLUME OF COPOLYMER, SAID COPOLYMER CONSISTING ESSENTIALLY OF 70 TO 95 PERCENT BY WEIGHT OF TETRAFLUOROETHYLENE AND FROM 30 TO 5 PERCENT BY WEIGHT OF A FLUORINE-CONTAINING MONOMER OTHER THAN TETRAFLUOROETHYLENE, AND HAVING A POROSITY IN THE RANGE OF FROM 25 TO 70 PERCENT BY VOLUME IN TERMS OF
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |