23 Utility Patents
#6,034 in Tokyo
#29,888 in Japan
#138,545 in the World
Forward Citations = 698
Company Filing History:


Sanwa Denki Kogyo Co., Ltd.
4. 3 out of 108
Honda Tsushin Kogyo Co., Ltd.
5. 2 out of 1,110

where one patent can have more than one assignee
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