Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637550 | Displacement type fluid machine | Masaki Koyama, Isamu Tsubono, Isao Hayase, Yuugo Mukai, Kenichi Oshima | 2003-10-28 |
| 6589035 | Scroll compressor having a valved back-pressure chamber and a bypass for over-compression | Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Kenichi Oshima +2 more | 2003-07-08 |