WATANABE, MASAHIRO

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A61M DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY 1153

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5607785 Polymer electrolyte electrochemical cell and process of preparing sameOct 11, 95Mar 04, 97[H07M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7578808 Suction-cleansing device and cleansing apparatus having the sameExpiredFeb 05, 04Aug 25, 09[A61M]
5871552 Process of preparing electrode for solid polymer electrolyte fuel cellExpiredNov 21, 96Feb 16, 99[H01M]
5846668 Fuel cell, electrolytic cell and process of cooling and/or dehumidifying sameExpiredMar 07, 97Dec 08, 98[H01M]
5846670 Gas diffusion electrode for electrochemical cell and process of preparing sameExpiredMay 19, 97Dec 08, 98[H01M]
5843519 Process for forming a catalyst layer on an electrode by spray-dryingExpiredOct 16, 95Dec 01, 98[B05D]
5766788 Electrode composition material for polymer electrolyte fuel cell and process of preparing sameExpiredFeb 22, 96Jun 16, 98[H01M]
5294232 Process of preparing solid polymer electrolyte type fuel cellExpiredDec 31, 92Mar 15, 94[H01M]
4931168 Gas permeable electrodeExpiredMay 23, 89Jun 05, 90[C25B]

Top Inventors for This Owner

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