50 Utility and 6 Design Patents
#1,683 in Tokyo
#7,605 in Japan
#37,952 in the World
rank by utility patentsForward Citations = 1,662
Company Filing History:



4. 4 out of 6,872
Sumitomo Chemical Company, Limited
5. 3 out of 1,703

where one patent can have more than one assignee
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