Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Yoshitomo Masuda — 30 Patents

Bridgestone: 30 patents #38 of 2,860Top 2%
SCSeiko Electronic Components: 4 patents #7 of 47Top 15%
Kodaira, JP: #45 of 1,073 inventorsTop 5%
Overall (All Time): #125,845 of 4,157,543Top 4%
30 Patents All Time

Issued Patents All Time

Showing 26–30 of 30 patents

Patent #TitleCo-InventorsDate
4939050 Electric cells Shinichi Toyosawa, Isamu Shinoda, Katsuhiko Arai, Toyoo Harada, Yuko Maeda +7 more 1990-07-03
4865932 Electric cells and process for making the same Isamu Shinoda, Masao Ogawa, Toyoo Harada, Takao Ogino, Kazuo Takayama +2 more 1989-09-12
4824745 Electric cell comprising a polymeric material film electrode having a collection integrated therewith Masao Ogawa, Toyoo Harada, Shinichi Toyosawa, Isamu Shinoda, Takahiro Kawagoe +1 more 1989-04-25
4803137 Non-aqueous electrolyte secondary cell Tadaaki Miyazaki, Takao Ogino, Takahiro Kawagoe 1989-02-07
4717634 Electric cells utilizing polyaniline as a positive electrode active material Hideharu Daifuku, Tadashi Fuse, Masao Ogawa, Shinichi Toyosawa, Ryota Fujio 1988-01-05