31 Utility Patents
#14 in Kitakyushu
#18,619 in Japan
#87,131 in the World
Forward Citations = 159
Company Filing History:
Nippon Steel Corporation


4. 4 out of 1,098
Nippon Steel & Sumitomo Metal Corporation
5. 3 out of 832,448 patents
Other
where one patent can have more than one assignee
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