Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5093712 | Resin-sealed semiconductor device | Yoshihiro Matsunaga, Tadao Nishimori, Kozo Shimamoto, Kiyoaki Tsumura | 1992-03-03 |
| 4917806 | Method of and apparatus for controlling pH and electrical conductivity of water using ion exchange resin | Yoshihiro Matsunaga, Tadao Nishimori | 1990-04-17 |
| 4344778 | Water producing apparatus | Kenkoku Azuma, Enju Nishiyama | 1982-08-17 |
| 4313312 | Water producing air conditioning system | Toshio Ito, Yoshio Hirayama, Nobuyoshi Takahashi | 1982-02-02 |
| 4304577 | Water producing apparatus | Toshio Ito, Kenkoku Azuma, Yoshio Hirayama, Nobuyoshi Takahashi | 1981-12-08 |