22 Utility Patents
#6,410 in Tokyo
#31,927 in Japan
#148,108 in the World
Forward Citations = 95
Company Filing History:
Nippon Steel & Sumitomo Metal Corporation
Nippon Steel Corporation

4. 2 out of 499
Mitsubishi Kasei Corporation
5. 2 out of 942
Asahi Kasei Kabushiki Kaisha
where one patent can have more than one assignee
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