US Patent No: 7,201,993

Number of patents in Portfolio can not be more than 2000

Polymer electrolyte fuel cell

ALSO PUBLISHED AS: 20020182478

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Abstract

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The present invention provides a polymer electrolyte fuel cell having an increased reaction area by forming a gas channel, a proton channel and an electron channel very close to each other inside a catalyst layer. This polymer electrolyte fuel cell includes a hydrogen ion conductive polymer electrolyte membrane; and a pair of electrodes having catalyst layers sandwiching the hydrogen ion conductive polymer electrolyte membrane between them and gas diffusion layers in contact with the catalyst layers, in which the catalyst layer of at least one of the electrodes comprises carbon particles supporting a noble metal catalyst, and the carbon particles include at least two kinds of carbon particles adsorbing a hydrogen ion conductive polymer electrolyte in mutually different dispersed states.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PANASONIC CORPORATIONOSAKA, JP13363

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hori, Yoshihiro Nara, JP 164 965
Kosako, Shinya Nishinomiya, JP 35 138
Morita, Junji Moriguchi, JP 59 69
Sakai, Osamu Nagano, JP 90 526
Sugawara, Yasushi Higashiosaka, JP 86 342
Uchida, Makoto Hirakata, JP 139 689
Yamamoto, Masao Tokyo, JP 153 1142
Yasumoto, Eiichi Kyoto, JP 94 394
Yoshida, Akihiko Hirakata, JP 147 872

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (2)
5,723,173 Method for manufacturing solid polymer electrolyte fuel cell 22 1996
6,060,187 Solid polymer type fuel cell and method for manufacturing the same 7 1998
 
LOS ALAMOS NATIONAL SECURITY, LLC (1)
5,211,984 Membrane catalyst layer for fuel cells 131 1991
 
TANAKA KIKINZOKU KOGYO K.K. (1)
5,728,485 Electrode for polymer electrolyte electrochemical cell and process of preparing same 24 1997
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
6,015,635 Electrode for fuel cell and method of manufacturing electrode for fuel cell 14 1998
 
WATANABE, MASAHIRO (1)
5,766,788 Electrode composition material for polymer electrolyte fuel cell and process of preparing same 30 1996

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
7,687,185 Using sacrificial material to mitigate catalyst support corrosion in fuel cell electrode 0 2006
 
TORAY INDUSTRIES, INC. (1)
7,824,786 Membrane electrode complex and solid type fuel cell using it 0 2004

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Oct 10, 2014
11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 10, 2018
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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

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