Uniform graphite plate
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 12, 2013
Grant Date -
Jun 5, 2008
app pub date -
Sep 26, 2007
filing date -
Sep 26, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A substrate useful for the formation of, inter alia, a flow field plate for a proton exchange membrane fuel cell, the substrate formed of at least one resin-impregnated sheet of compressed particles of exfoliated graphite comprising two major surfaces, the substrate having an active area with flow field channels thereon, the sheet of compressed particles of exfoliated graphite having a local web thickness in at least about 50% of its active area that is no more than about 55% greater than the minimum web thickness of the active area of the substrate.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
GRAFTECH INTERNATIONAL HOLDINGS INC | 982 KEYNOTE CIRCLE BROOKLYN HEIGHTS OH 44131 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Gough, Jeffery J | Olmsted Township, US | 1 | 1 |
# of filed Patents : 1 Total Citations : 1 | |||
Klug, Jeremy H | Union, US | 10 | 101 |
# of filed Patents : 10 Total Citations : 101 | |||
Krassowski, Daniel W | Columbia Station, US | 15 | 429 |
# of filed Patents : 15 Total Citations : 429 | |||
Mercuri, Robert A | Seven Hills, US | 36 | 545 |
# of filed Patents : 36 Total Citations : 545 | |||
Stuart, David J | North Ridgeville, US | 4 | 190 |
# of filed Patents : 4 Total Citations : 190 | |||
Weber, Thomas W | Cleveland, US | 9 | 131 |
# of filed Patents : 9 Total Citations : 131 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
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