67 Utility and 4 Design Patents
#342 in Yokohama
#4,185 in Japan
#21,980 in the World
rank by utility patentsForward Citations = 565
Company Filing History:



4. 6 out of 1,033
Kabushiki Kaisha Topcon
5. 4 out of 576

where one patent can have more than one assignee
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