8 Utility and 1 Design Patents
#19,840 in Tokyo
#107,301 in Japan
#520,178 in the World
rank by utility patentsForward Citations = 25
Company Filing History:
Eiken Kagaku Kabushiki Kaisha


4. 2 out of 586

5. 1 out of 358

where one patent can have more than one assignee
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