WATANABE, MASAHIRO
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Aug 25, 2009 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 256 Total Citation Count
- May 23, 1989 Earliest Filing
- 8 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
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Expired/Abandoned/Withdrawn Patents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]
Top Inventors for This Owner
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