31 Utility and 1 Design Patents
#2,043 in Kanagawa
#18,691 in Japan
#87,495 in the World
rank by utility patentsForward Citations = 343
Company Filing History:


Katoh Electrical Machinery Company, Ltd.
4. 3 out of 1,229
Nhk Spring Co., Ltd.
5. 2 out of 2,096

where one patent can have more than one assignee
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