31 Utility and 3 Design Patents
#291 in Saitama 343-0827
#18,728 in Japan
#87,855 in the World
rank by utility patentsForward Citations = 600
Company Filing History:



4. 6 out of 630
Nihon Dempa Kogyo Co., Ltd.
5. 4 out of 1,279

where one patent can have more than one assignee
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