11 Utility Patents
#264 in Yamanashi 400-0862
#76,525 in Japan
#359,801 in the World
Forward Citations = 5
Company Filing History:

Nihonkagakusangyo Co., Ltd.
Mitsui Mining & Smelting Company, Ltd.
4. 1 out of 341

where one patent can have more than one assignee
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