19 Utility Patents
#98 in Shizuoka-ken
#39,195 in Japan
#181,132 in the World
Forward Citations = 93
Company Filing History:

Sumitomo Metal Industries, Inc.
where one patent can have more than one assignee
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#98 in Shizuoka-ken
#39,195 in Japan
#181,132 in the World
Company Filing History:

Get your Inventor Badge Today