Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10008426 | Etching method and etchant | Takehiro Nakai, Norihiko Tsuchiya, Junichi Shimada, Youko Itabashi | 2018-06-26 |
| 6163050 | Semiconductor device having insulation film whose breakdown voltage is improved and its manufacturing method | Kiyoshi Hisatomi, Yuuichi Mikata, Katsunori Ishihara | 2000-12-19 |
| 5714399 | Semiconductor device having insulation film whose breakdown voltage is improved and its manufacturing method | Kiyoshi Hisatomi, Yuuichi Mikata, Katsunori Ishihara | 1998-02-03 |