Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6335529 | Ultraviolet detector | Akihisa Matsuyama | 2002-01-01 |
| 5994723 | Semiconductor element and its method of manufacturing | Koichi Imanaka | 1999-11-30 |
| 5182228 | Method of manufacturing a semiconductor light-emitting device | Koichi Imanaka | 1993-01-26 |
| 5179287 | Displacement sensor and positioner | Kourou Kitajima | 1993-01-12 |
| 5130531 | Reflective photosensor and semiconductor light emitting apparatus each using micro Fresnel lens | Yoshinori Ito, Koichi Imanaka, Shiro Ogata, Hiroshi Goto | 1992-07-14 |
| 5084893 | Semiconductor light-emitting device | Koichi Imanaka | 1992-01-28 |