29 Utility and 3 Design Patents
#4,412 in Tokyo
#20,884 in Japan
#97,669 in the World
rank by utility patentsForward Citations = 108
Company Filing History:

Mitsubishi Chemical Corporation
Nippon Steel Sumitomo Metal Corporation
4. 3 out of 3,548
Nippon Steel Corporation
5. 3 out of 13
Mitsubishi Heavy Industries Marine Machinery & Equipment Co., Ltd.
where one patent can have more than one assignee
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