Patents/Inventors

Kouhei Sasamoto

JoetsuJP2 patents

3 Patents

US122886882025
Manufacturing Method of Photomask, and Photomask Blank
SHIN-ETSU CHEMICAL CO., Ltd.
0 cites
US119716532024
Photomask Blank, Method for Producing Photomask, and Photomask
SHIN-ETSU CHEMICAL CO., Ltd.
0 cites
US117748452023
Photomask Blank, and Manufacturing Method Thereof
SHIN-ETSU CHEMICAL CO., Ltd.
0 cites