10 Utility Patents
#263 in Hirakata
#85,573 in Japan
#407,520 in the World
Forward Citations = 153
Company Filing History:
E. C. Chemical Ind. Co., Ltd.
C. Itoh & Co., Ltd.
E. C. Chemical Co., Ltd.
4. 3 out of 832,680 patents
Other
5. 2 out of 6
C. Itoh Fine Chemical Co., Ltd.
where one patent can have more than one assignee
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