20 Utility Patents
#262 in Sakai
#36,537 in Japan
#168,707 in the World
Forward Citations = 286
Company Filing History:
Dainippon Ink and Chemicals, Incorporated
Yamamura Glass Co., Ltd.
Kawamura Institute of Chemical Research
4. 1 out of 832,492 patents
Other
5. 1 out of 3,461

where one patent can have more than one assignee
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