YL

Yen-Hsing Li

PC Patech Fine Chemicals Co.: 1 patents #7 of 13Top 55%
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Patent #TitleCo-InventorsDate
11111450 Base oil and lubricant oil composition including the same Wei-Chieh Liang, Hsu-Hua Tang, Jung-Tsung Hung, Jeng-Shiang Tsaih 2021-09-07