26 Utility and 1 Design Patents
#2,605 in Kanagawa
#24,773 in Japan
#114,930 in the World
rank by utility patentsForward Citations = 679
Company Filing History:
Tokyo Ohka Kogyo Co., Ltd.
Tokyo Ohka Kogyo Kabushiki Kaisha
Tokyo Denshi Kagaku Co., Ltd.
4. 2 out of 6
Tokyo Denshi Kagaku Kabushiki Kaisha
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