25 Utility Patents
#5,413 in Tokyo
#26,337 in Japan
#122,153 in the World
Forward Citations = 101
Company Filing History:


Toyofumi Watanabe
4. 1 out of 1
Nkk Cororation
5. 1 out of 2
Nakagawa Special Steel Inc.
where one patent can have more than one assignee
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