Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5126807 | Vertical MOS transistor and its production method | Shunichi Hiraki, Akihiko Osawa, Satoshi Yanagiya | 1992-06-30 |
| 5086332 | Planar semiconductor device having high breakdown voltage | Akio Nakagawa, Kiminori Watanabe, Yutaka Koshino, Yoshihiro Yamaguchi | 1992-02-04 |
| 5084408 | Method of making complete dielectric isolation structure in semiconductor integrated circuit | Yutaka Koshino, Akihiko Osawa, Satoshi Yanagiya | 1992-01-28 |
| 5031021 | Semiconductor device with a high breakdown voltage | Kazuo Tsuru, Tatsuo Akiyama, Yutaka Koshino | 1991-07-09 |
| 5029324 | Semiconductor device having a semiconductive protection layer | Akihiko Osawa, Yutaka Koshino | 1991-07-02 |
| 4984052 | Bonded substrate of semiconductor elements having a high withstand voltage | Yutaka Koshino, Akihiko Osawa, Satoshi Yanagiya | 1991-01-08 |
| 4968932 | Evaluation method for semiconductor device | Yutaka Koshino, Seiji Yasuda | 1990-11-06 |
| 4780426 | Method for manufacturing high-breakdown voltage semiconductor device | Yutaka Koshino, Jiro Ohshima | 1988-10-25 |
| 4710794 | Composite semiconductor device | Yutaka Koshino, Tatsuo Akiyama | 1987-12-01 |