YI

Yohei IKEBE

HO Hoya: 3 patents #9 of 58Top 20%
Overall (2020): #62,184 of 565,922Top 15%
3
Patents 2020

Issued Patents 2020

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10871707 Reflective mask blank, reflective mask and method of manufacturing semiconductor device 2020-12-22
10642149 Reflective mask blank, reflective mask and method of manufacturing semiconductor device Kazuhiro Hamamoto 2020-05-05
10578961 Mask blank substrate, multi-layer reflective film coated substrate, and mask blank Masaru Tanabe 2020-03-03