21 Utility Patents
#2,290 in Yokohama
#34,109 in Japan
#157,675 in the World
Forward Citations = 48
Company Filing History:
Mitsui Kinzoku Act Corporation
Mitsui Mining & Smelting Company, Ltd.

4. 1 out of 242
Ohi Seisakusho Co., Ltd.
where one patent can have more than one assignee
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