12 Utility Patents
#12,791 in Tokyo
#68,228 in Japan
#314,808 in the World
Forward Citations = 62
Company Filing History:


Okamoto Chemical Industry Co., Ltd.
4. 1 out of 104
Toyo Ink Mfg. Co., Ltd.
5. 1 out of 1,319
Nippon Shokubai Co., Ltd.
where one patent can have more than one assignee
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