50 Utility Patents
#1,758 in Tokyo
#7,767 in Japan
#38,503 in the World
Forward Citations = 448
Company Filing History:
Asahi Kogaku Kogyo Kabushiki Kaisha

Tokyo Kogaku Kikai Kabushiki Kaisha
4. 2 out of 1,033
Kabushiki Kaisha Topcon
5. 1 out of 7
Asahi Kogaku Kogyo Kaisha
where one patent can have more than one assignee
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