Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6692953 | Portable air-borne bacteria sampler | Naoki Sugita, Takeshi Yamada, Yukihiro Nakata | 2004-02-17 |
| 6565638 | Portable air-borne bacteria sampler | Naoki Sugita, Takeshi Yamada, Yukihiro Nakata | 2003-05-20 |
| 4829773 | Air flow visualizing device | Fujio Matsumura, Naoki Sugita | 1989-05-16 |
| 4750921 | Electrostatic filter dust collector | Naoki Sugita | 1988-06-14 |