20 Utility and 2 Design Patents
#2,403 in Yokohama
#35,955 in Japan
#165,281 in the World
rank by utility patentsForward Citations = 37
Company Filing History:
Nhk Spring Co., Ltd.

Other
4. 1 out of 113
Kobayashi Pharmaceutical Co., Ltd.
5. 1 out of 1
Nhk Co., Ltd.
where one patent can have more than one assignee
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