Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5081455 | Electromagnetic wave absorber | Kenichi Hatakeyama, Satoshi Yoshiuchi, Takashi Harada, Takashi Kizaki | 1992-01-14 |
| 4538151 | Electro-magnetic wave absorbing material | Kenichi Hatakeyama | 1985-08-27 |