35 Utility Patents
#3,331 in Tokyo
#15,258 in Japan
#71,721 in the World
Forward Citations = 590
Company Filing History:
Kabushiki Kaisha Topcon


4. 4 out of 153
Tokyo Kogaku Kikai Kabushiki Kaisha
5. 3 out of 3
Tokyo Kogaku Kikai K. K.
where one patent can have more than one assignee
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