8 Utility Patents
#19,840 in Tokyo
#107,301 in Japan
#520,171 in the World
Forward Citations = 75
Company Filing History:
Mitsubishi Materials Silicon Corporation

Komatsu Electronic Metals Co., Ltd.
4. 3 out of 189
Toshiba Ceramics Co., Ltd.
5. 2 out of 2
Kagaku Gijutsu Sinkou Jigyo Dan
where one patent can have more than one assignee
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