143 Utility Patents
#135 in Tokyo
#595 in Japan
#4,429 in the World
Forward Citations = 844
Company Filing History:

Asahi Kogaku Kogyo Kabushiki Kaisha



Nippon Steel & Sumitomo Metal Corporation
4. 12 out of 2,519

5. 11 out of 3,491
Nippon Steel Corporation
where one patent can have more than one assignee
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