41 Utility and 5 Design Patents
#1 in Futtsu
#11,463 in Japan
#55,104 in the World
rank by utility patentsForward Citations = 226
Company Filing History:
Nippon Steel Corporation
Nippon Steel Sumitomo Metal Corporation

4. 5 out of 5,729

5. 3 out of 7
Denken Co., Ltd.
where one patent can have more than one assignee
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