14 Utility Patents
#11,220 in Tokyo
#58,199 in Japan
#271,038 in the World
Forward Citations = 47
Company Filing History:
Sumco Corporation

Hanyang Hak Won Co., Ltd.
where one patent can have more than one assignee
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#11,220 in Tokyo
#58,199 in Japan
#271,038 in the World
Company Filing History:

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