Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5514196 | Air cleaning apparatus | Takashi Tanahashi, Tsuyoshi Wakabayashi, Takenobu Matsuo | 1996-05-07 |
| 5261935 | Clean air apparatus | Katsumi Ishii, Takanobu Asano, Masaharu Abe, Kenichi Yamaga, Kazunari Sakata +1 more | 1993-11-16 |
| 5219464 | Clean air apparatus | Kenichi Yamaga, Kazunari Sakata, Katsumi Ishii, Takashi Tanahashi | 1993-06-15 |