55 Utility and 17 Design Patents
#1,494 in Tokyo
#6,461 in Japan
#32,492 in the World
rank by utility patentsForward Citations = 258
Company Filing History:

Nippon Steel Corporation

4. 5 out of 1,101
Nippon Steel Sumitomo Metal Corporation
5. 4 out of 7,529

where one patent can have more than one assignee
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