5 Utility Patents
#127 in Ichikawa
#162,438 in Japan
#826,260 in the World
Forward Citations = 28
Company Filing History:

Sekiyushigen Kaihatsu Kabushiki Kaisha

4. 2 out of 73

5. 1 out of 3,527
Nippon Steel Corporation
where one patent can have more than one assignee
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