Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618095 | Backlighting device | Keiji Kashima, Naoki Yoshida | 1997-04-08 |
| 5089781 | Electromagnetic conductivity meter and a conductivity measuring method | Kenji Arichika, Satoshi Higashi, Noboru Maruyama | 1992-02-18 |