6 Utility Patents
#4,754 in Austin, TX
#22,474 in Texas
#336,979 in US
#696,408 in the World
Forward Citations = 66
Company Filing History:

Pen Inc.
Sichuan Yinhe Chemical Co., Ltd.
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#4,754 in Austin, TX
#22,474 in Texas
#336,979 in US
#696,408 in the World
Company Filing History:

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