150 Utility and 2 Design Patents
#109 in Tokyo
#525 in Japan
#3,976 in the World
rank by utility patentsForward Citations = 846
Company Filing History:





Nippon Steel & Sumitomo Metal Corporation
4. 11 out of 2,496

5. 8 out of 3,491
Nippon Steel Corporation
where one patent can have more than one assignee
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