221 Utility Patents
#1 in Wako
#171 in Japan
#1,666 in the World
Forward Citations = 3,916
Company Filing History:


Tonen Corporation
4. 3 out of 629
Nihon Dempa Kogyo Co., Ltd.
5. 2 out of 831,952 patents
Other
where one patent can have more than one assignee
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