20 Utility and 1 Design Patents
#9 in Futtsu
#36,605 in Japan
#169,187 in the World
rank by utility patentsForward Citations = 591
Company Filing History:
Nippon Steel Corporation
Nippon Steel & Sumitomo Metal Corporation

4. 2 out of 538
Sintokogio, Ltd.
5. 1 out of 21,814

where one patent can have more than one assignee
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