31 Utility and 1 Design Patents
#1,383 in Yokohama
#18,619 in Japan
#87,131 in the World
rank by utility patentsForward Citations = 298
Company Filing History:


Nhk Spring Co., Ltd.
4. 4 out of 86
Jidosha Denki Kogyo Kabushiki Kaisha
5. 2 out of 893

where one patent can have more than one assignee
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