Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11908972 | Semiconductor light-emitting device and optical coupling device | Akira Tanaka, Hideto Sugawara, Katsufumi Kondo, Kenji Isomoto, Hiroaki Ootsuka | 2024-02-20 |
| 11114822 | Optical semiconductor element | Hideto Sugawara, Kenji Isomoto | 2021-09-07 |
| 9070817 | Photocoupler and semiconductor light emitting element | Kenji Fujimoto | 2015-06-30 |
| 6548834 | Semiconductor light emitting element | Hideto Sugawara, Koichi Nitta, Ryo Saeki, Katsufumi Kondo | 2003-04-15 |
| 6229834 | Led display device | Katsuhiko Nisitani, Kazumi Unno, Masayuki Ishikawa, Ryo Saeki, Takafumi Nakamura | 2001-05-08 |
| 5732098 | LED display device | Katsuhiko Nisitani, Kazumi Unno, Masayuki Ishikawa, Ryo Saeki, Takafumi Nakamura | 1998-03-24 |