11 Utility Patents
#14,576 in Tokyo
#76,914 in Japan
#362,783 in the World
Forward Citations = 64
Company Filing History:


Hitachi Industrial Equipment Systems Co., Ltd.
4. 2 out of 217
Dowa Mining Co., Ltd.
5. 1 out of 212
Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
where one patent can have more than one assignee
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