6 Utility Patents
#465 in Ichihara
#139,418 in Japan
#694,733 in the World
Forward Citations = 56
Company Filing History:

Tokyo Rikakikai Co., Ltd.
Idemitsu Kosan., Ltd.
where one patent can have more than one assignee
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#465 in Ichihara
#139,418 in Japan
#694,733 in the World
Company Filing History:

Get your Inventor Badge Today