Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8400254 | Surge absorbing element | EIICHI KOGA, Mikinori Amisawa, Seiichi Minami, Hirofumi Yamada, Tomohisa Okimoto | 2013-03-19 |
| 7973638 | Voltage non-linear resistor ceramic composition and multilayer varistor using the same | EIICHI KOGA | 2011-07-05 |