ClassID:

213262

H01M4/881 - page 3 - CPC Classification

Classification description:

Electrodes; Inert electrodes with catalytic activity, e.g. for fuel cells; Processes of manufacture; Supports for the deposition of the catalytic active composition Electrolytic membranes

Recent Application in this class:
#601
20050227128
2005-10-13

Fuel cell electrocatalyst of Pt-Zn-Ni/Fe

#602
20050214610
2005-09-29

Catalyst-coated membrane, membrane-electrode assembly, and polymer electrolyte fuel cell

#603
20050208354
2005-09-22

Proton-conducting polymer membrane and method for the production thereof to simultaneously remove the catalyst layers

#604
20050200040
2005-09-15

Method of preparing membrane electrode assemblies with aerogel supported catalyst

#605
20050181252
2005-08-18

Ion conducting polymer membranes

#606
20050170222
2005-08-04

Full cell electrocatalyst of pt-ni-mn/fe

#607
20050163920
2005-07-28

Membrane electrode assembly prepared by direct spray of catalyst to membrane

#608
20050148458
2005-07-07

Method for producing electrochemical device

#609
20050112432
2005-05-26

Method of plating metal leafs and metal membranes

#610
20050112333
2005-05-26

Method and apparatus for forming high surface area material films and membranes

#611
20050106448
2005-05-19

Fuel cell having stack structure

#612
20050106435
2005-05-19

Twin-wire arc deposited electrode, solid electrolyte membrane, membrane electrode assembly and fuel cell

#613
20050100779
2005-05-12

Three dimensional polymeric fuel cell components

#614
20050079402
2005-04-14

Fuel cell

#615
20050072514
2005-04-07

Method of making membrane electrode assemblies

#616
20050069745
2005-03-31

Polymer electrolyte membranes for use in fuel cells

#617
20050067345
2005-03-31

Production of catalyst coated membranes

#618
20050064276
2005-03-24

Ink for forming catalyst layer, and electrode and membrane-electrode assembly using the same

#619
20050058881
2005-03-17

Catalyst layer edge protection for enhanced MEA durability in PEM fuel cells

#620
20050058870
2005-03-17

Addressing one MEA failure mode by controlling MEA catalyst layer overlap

#621
20050058869
2005-03-17

Low cost gas diffusion media for use in PEM fuel cells

#622
20050037920
2005-02-17

Platinum-indium-iron/tungsten/manganese fuel cell electrocatalyst

#623
20050031930
2005-02-10

Solid polyelectrolyte, assembly of membrane and electrodes, amd fuel cell

#624
20050014056
2005-01-20

Membrane electrode unit for electrochemical equipment

#625
20050003255
2005-01-06

Membrane electrode assembly, manufacturing process therefor and solid-polymer fuel cell

#626
20050000799
2005-01-06

Preparation and storage of membrane and electrode assemblies

#627
20050000318
2005-01-06

Synthesis of metal nanoparticle compositions from metallic and ethynyl compounds

#628
18849370
2025-06-03

Fuel cell electrode, catalyst-coated membrane, fuel cell, and method for producing the fuel cell electrode and catalyst-coated membrane