Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5204772 | Electrically responsive light controlling device | Masahiro Hirata, Masato Hyohdou, Yasuhiro Saito, Hideo Kawahara | 1993-04-20 |
| 4576716 | Method of producing water treatment medium and medium produced thereby | Masahiro Fujii, Toshio Haruta | 1986-03-18 |
| 4515691 | Filtration apparatus | Masahiro Fujii, Toshio Haruta | 1985-05-07 |