40 Utility Patents
#13 in Tsurugashima
#12,010 in Japan
#57,249 in the World
Forward Citations = 497
Company Filing History:


Dai Nippon Printing Co., Ltd.
4. 4 out of 141
Nippon Mining Co., Ltd.
5. 1 out of 130
Japan Energy Corporation
where one patent can have more than one assignee
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