69 Utility Patents
#880 in Tokyo
#3,741 in Japan
#19,648 in the World
Forward Citations = 578
Company Filing History:

Dainippon Ink and Chemicals, Incorporated




4. 3 out of 42
Kawamura Institute of Chemical Research
5. 2 out of 24
Nemoptic
where one patent can have more than one assignee
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