YC

Yuh-Loo Chang

AH American Hoechst: 1 patents #61 of 142Top 45%
Overall (All Time): #3,937,116 of 4,157,543Top 95%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4863827 Postive working multi-level photoresist Sangya Jain 1989-09-05