57 Utility and 26 Design Patents
#1,405 in Tokyo
#5,980 in Japan
#30,260 in the World
rank by utility patentsForward Citations = 658
Company Filing History:

Mitsubishi Chemical Corporation

4. 6 out of 61
Nippon Micrometal Corporation
5. 4 out of 35,689

where one patent can have more than one assignee
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