15 Utility Patents
#28 in Gunma-ken
#53,152 in Japan
#247,080 in the World
Forward Citations = 151
Company Filing History:


Yoshino Kogyosho Co., Ltd.
4. 2 out of 1,007
Mitsui Petrochemical Industries, Ltd.
5. 1 out of 41

where one patent can have more than one assignee
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