Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867974 | Agent for preventing plant virus diseases | Hiroshi Morita, Jun Hiraki, Masakazu Hatakeyama | 1989-09-19 |
| 4832847 | Process for activated-sludge treatment of sewage or industrial waste water | Eiichi Nakamura | 1989-05-23 |
| 4814085 | Fixing carrier for activated sludge in sewage or waste water treatment | Osamu Miki, Takehisa Muronaga, Takaharu Fujii | 1989-03-21 |
| 4814125 | Fixing carrier for activated sludge in sewage or waste water treatment | Osamu Miki, Takehisa Muronaga, Takaharu Fujii | 1989-03-21 |