31 Utility Patents
#3,939 in Tokyo
#18,558 in Japan
#86,867 in the World
Forward Citations = 13
Company Filing History:
Nippon Steel Corporation
Nippon Steel & Sumitomo Metal Corporation
Unipres Corporation
4. 1 out of 2
Nippon Steel & Sumitomo Metal Coporation
where one patent can have more than one assignee
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