US Patent No: 6,682,837
Number of patents in Portfolio can not be more than 2000
Method for producing electricity using a platinum-ruthenium-palladium catalyst in a fuel cell
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Jan 27, 2004
Issued date -
Nov 25, 2002
filing date -
10/223,942
serial no -
Expired
status
Importance
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Abstract
A method for producing electricity using a fuel cell that utilizes a ternary alloy composition as a fuel cell catalyst, the ternary alloy composition containing platinum, ruthenium and palladium. The alloy shows increased activity as compared to well-known catalysts.
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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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| 5,773,162 Direct methanol feed fuel cell and system | 109 | 1995 | |
| 6,432,284 Hydrogen generation by electrolysis of aqueous organic solutions | 27 | 2000 | |
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| 5,225,391 Electrocatalyst for anode | 58 | 1992 | |
| 5,208,207 Electrocatalyst | 30 | 1992 | |
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| 4,447,506 Ternary fuel cell catalysts containing platinum, cobalt and chromium | 45 | 1983 | |
| 4,806,515 Ternary fuel cell catalyst containing platinum and gallium | 22 | 1987 | |
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| 5,298,343 Electrocatalysts for H.sub.2 /O.sub.2 fuel cells cathode | 20 | 1992 | |
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| 4,478,917 Fuel cell | 63 | 1983 | |
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| 5,856,036 Single phase ternary Pt-Ru-Os catalysts for direct oxidation fuel cells | 30 | 1997 | |
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| 5,183,713 Carbon monoxide tolerant platinum-tantalum alloyed catalyst | 33 | 1991 | |
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| 4,783,381 Process for the production of electricity in a fuel cell, and fuel cell | 18 | 1987 | |
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| 5,162,166 Devices providing electrical energy from fuel/oxygen mixtures | 13 | 1991 | |
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| 5,024,905 Platinum alloy electrocatalyst | 59 | 1990 | |
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| 6,183,895 Fuel-cell power generating system | 51 | 1998 | |
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| 6,284,402 Electrocatalyst compositions | 24 | 1999 | |
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| 6,007,934 Co-tolerant anode catalyst for PEM fuel cells and a process for its preparation | 60 | 1998 | |
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 | Jul 27, 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 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |