21 Utility Patents
#58 in Iwata
#34,109 in Japan
#157,673 in the World
Forward Citations = 64
Company Filing History:

Kyodo Yushi Co., Ltd.
Other
4. 1 out of 46
Showa Shell Sekiyu K.k.
5. 1 out of 690
Nippon Oil Company
where one patent can have more than one assignee
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