40 Utility and 2 Design Patents
#2,708 in Tokyo
#12,042 in Japan
#57,485 in the World
rank by utility patentsForward Citations = 405
Company Filing History:

Alps Electric Co., Ltd.
Dowa Mining Co., Ltd.
4. 4 out of 3,192
Dai Nippon Printing Co., Ltd.
5. 3 out of 3,548
Nippon Steel Corporation
where one patent can have more than one assignee
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