Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6177690 | Semiconductor light emitting device having a p-n or p-i-n junction | Eisaku Kato, Akira Ishibashi | 2001-01-23 |
| 6069020 | Method of manufacturing semiconductor light-emitting device | Eisaku Kato, Masaharu Nagai | 2000-05-30 |
| 6031244 | Luminescent semiconductor device with antidiffusion layer on active layer surface | Kazushi Nakano, Akira Ishibashi, Atsushi Toda, Satoshi Taniguchi, Tomonori Hino +1 more | 2000-02-29 |
| 6020601 | Semiconductor light-emitting device | Eisaku Kato, Masaharu Nagai | 2000-02-01 |
| 5119449 | Optical directional coupler switch | Keiro Komatsu, Kunio Tada, Akira Suzuki | 1992-06-02 |