Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5460744 | Agents used for improving the bottom and water quality in water areas where sludge is deposited | Shigeshisa Iwai, Michiharu Kobayashi, Koji Kuroda, Shigeru Toda | 1995-10-24 |
| 5387343 | Method for improving bottom and water quality in water areas and a set of agents used in the method | Shigehisa Iwai, Michiharu Kobayashi, Koji Kuroda, Shigeru Toda | 1995-02-07 |