10 Utility Patents
#8 in Yachiyo
#83,723 in Japan
#390,486 in the World
Forward Citations = 415
Company Filing History:
Yoshino Kogyosho Co., Ltd.

Hayakawa Rubber Company Limited
4. 2 out of 1,007
Mitsui Petrochemical Industries, Ltd.
where one patent can have more than one assignee
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