39 Utility Patents
#3 in Kosai
#12,028 in Japan
#56,121 in the World
Forward Citations = 244
Company Filing History:
Showa Shell Sekiyu Kabushiki Kaisha
where one patent can have more than one assignee
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#3 in Kosai
#12,028 in Japan
#56,121 in the World
Company Filing History:
Get your Inventor Badge Today