61 Utility and 24 Design Patents
#1,239 in Tokyo
#5,180 in Japan
#26,392 in the World
rank by utility patentsForward Citations = 516
Company Filing History:

Denki Kagaku Kogyo Kabushiki Kaisha

4. 9 out of 4,213

5. 2 out of 547

where one patent can have more than one assignee
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