20 Utility Patents
#19 in Kawaguchi
#35,955 in Japan
#165,281 in the World
Forward Citations = 72
Company Filing History:

Sumitomo Metal Industries, Inc.
where one patent can have more than one assignee
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#19 in Kawaguchi
#35,955 in Japan
#165,281 in the World
Company Filing History:

Get your Inventor Badge Today