TO

Takekazu Obata

TC Tokyo Ohka Kogyo Co.: 1 patents #437 of 684Top 65%
Overall (All Time): #3,493,059 of 4,157,543Top 85%
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Patent #TitleCo-InventorsDate
6806032 Negative-type photosensitive resin composition Hiroshi Takanashi, Tomoya Kudo 2004-10-19