73 Utility and 3 Design Patents
#826 in Tokyo
#3,424 in Japan
#18,567 in the World
rank by utility patentsForward Citations = 606
Company Filing History:



4. 5 out of 1,227
Nhk Spring Co., Ltd.
5. 4 out of 7
Yokohama Kiko Co., Ltd.
where one patent can have more than one assignee
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