TA

Tatsuo Asakawa

HO Hoya: 3 patents #10 of 106Top 10%
Overall (2017): #58,112 of 506,227Top 15%
3
Patents 2017

Issued Patents 2017

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9726969 Reflective mask blank, method of manufacturing same, reflective mask and method of manufacturing semiconductor device Kazuhiro Hamamoto, Tsutomu Shoki 2017-08-08
9720315 Reflective mask blank, method of manufacturing reflective mask blank, reflective mask and method of manufacturing semiconductor device Kazuhiro Hamamoto, Tsutomu Shoki 2017-08-01
9535318 Reflective mask blank and method for manufacturing same, method for manufacturing reflective mask, and method for manufacturing semiconductor device Kazuhiro Hamamoto, Osamu Maruyama, Tsutomu Shoki 2017-01-03