Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5415808 | Flocculant for water treatment | Takao Hasegawa, Takuya Onitsuka, Yasuhiro Ehara, Katsuhiro Hashimoto | 1995-05-16 |
| 5227089 | Method for producing flocculant for water treatment | Takao Hasegawa, Takuya Onitsuka, Yasuhiro Ehara, Katsuhiro Hashimoto | 1993-07-13 |