US Patent No: 6,730,427
Number of patents in Portfolio can not be more than 2000
Electrode for fuel cell and method of manufacturing the same
Stats
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May 4, 2004
Issued date -
Dec 7, 1999
filing date -
09/455,938
serial no -
In Force
status
Importance
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Abstract
Catalyst material containing two or more kinds of metal elements or/and silicon are mainly carried in proton conductive passages of a solid polymer electrolyte and the surface of each of carbon particles which abut on each the proton conductive passages.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 6,344,291 Solid polymer electrolyte-catalyst composite electrode, electrode for fuel cell, and process for producing these electrodes | 17 | 1998 | |
| 6,528,201 Electrode for fuel cell and process for producing the same | 9 | 2000 | |
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| 6,165,636 Composition of a selective oxidation catalyst for use in fuel cells | 10 | 1999 | |
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| 5,728,485 Electrode for polymer electrolyte electrochemical cell and process of preparing same | 24 | 1997 | |
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| 6,156,449 Catalyst layer for polymer electrolyte fuel cells | 24 | 1999 | |
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| 5,294,232 Process of preparing solid polymer electrolyte type fuel cell | 28 | 1992 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 4, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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