42 Utility Patents
#2,427 in Tokyo
#10,912 in Japan
#52,364 in the World
Forward Citations = 653
Company Filing History:

Copyer Co., Ltd.
Copyer Kabushiki Kaisha
4. 3 out of 53
Canon Inc.
5. 1 out of 832,448 patents
Other
where one patent can have more than one assignee
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