YC

Young-Chul Chang

Samsung: 1 patents #49,284 of 75,807Top 70%
Overall (All Time): #2,125,650 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7776475 Lithium rechargeable battery and lithium rechargeable battery pack Ryuichi Shimizu, Takitaro Yamaguchi, Cheol-Soo Jung, Hyun-Jei Chung 2010-08-17
6782906 Time based mass flow controller and method for controlling flow rate using it 2004-08-31