Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11618703 | Crude oil sludge treatment agent, crude oil sludge treatment method and crude oil sludge treatment agent kit | Takehito Sugiura, Michiyo Sugiura | 2023-04-04 |
| 7542668 | Photographic device | Masayuki Ito | 2009-06-02 |
| 6098649 | Waste processing apparatus, waste recovery system and liquid container | Tsutomu Noguchi, Hiraku Sugiki, Yasuhiro Hirafune | 2000-08-08 |
| 5863002 | Waste processing apparatus, waste recovery system and liquid container | Tsutomu Noguchi, Hiraku Sugiki, Yasuhiro Hirafune | 1999-01-26 |