Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4576716 | Method of producing water treatment medium and medium produced thereby | Hiroaki Ida, Masahiro Fujii | 1986-03-18 |
| 4515691 | Filtration apparatus | Hiroaki Ida, Masahiro Fujii | 1985-05-07 |