21 Utility and 1 Design Patents
#6,827 in Tokyo
#34,126 in Japan
#157,806 in the World
rank by utility patentsForward Citations = 76
Company Filing History:

Senju Metal Industry Co., Ltd.
Komatsu Zenoah Kabushiki Kaisha
4. 1 out of 832,575 patents
Other
5. 1 out of 2,028

where one patent can have more than one assignee
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