12 Utility Patents
#1,894 in Yongin-si
#18,313 in South Korea
#327,272 in the World
Forward Citations = 566
Company Filing History:

Youngchang Chemical Co., Ltd.
where one patent can have more than one assignee
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#1,894 in Yongin-si
#18,313 in South Korea
#327,272 in the World
Company Filing History:

Get your Inventor Badge Today