SS

Sung Shim

EC Em-Tech Co.: 1 patents #1 of 15Top 7%
📍 Budong-ri, CA: #1 of 1 inventorsTop 100%
Overall (2025): #202,818 of 469,880Top 45%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12252468 Method for purifying waste N-methyl-2-pyrrolidone mixture solution — 2025-03-18