12 Utility Patents
#57 in Ushiku
#69,658 in Japan
#326,540 in the World
Forward Citations = 610
Company Filing History:

Other
Sumco Corporation
4. 1 out of 1
Koji Kato
where one patent can have more than one assignee
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#57 in Ushiku
#69,658 in Japan
#326,540 in the World
Company Filing History:

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