18 Utility Patents
#2,756 in Yokohama
#42,164 in Japan
#195,919 in the World
Forward Citations = 268
Company Filing History:

Kabushiki Kaisha Topcon

4. 2 out of 153
Tokyo Kogaku Kikai Kabushiki Kaisha
5. 1 out of 524

where one patent can have more than one assignee
Get your Inventor Badge Today