Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6142759 | Two-shift fluid machine | Kenji Hiraishi | 2000-11-07 |
| RE36949 | Fluid machine having screw rotors with a straight portion to be chucked | Koji Tomita | 2000-11-07 |
| 5806182 | Method of processing screw rotor | Koji Tomita | 1998-09-15 |
| 5797735 | Fluid machine having balance correction | Susumu Ishikawa, Koji Tomita | 1998-08-25 |
| 5772418 | Screw type compressor rotor, rotor casting core and method of manufacturing the rotor | Koji Tomita | 1998-06-30 |
| 5692889 | Fluid machine having screw rotors with a straight portion to be chucked | Koji Tomita | 1997-12-02 |
| 5443054 | Supercharging device for an internal combustion engine | Masao Teraoka | 1995-08-22 |
| 5242330 | Variable speed pulley and gear mechanism | — | 1993-09-07 |
| 4989218 | Induction heating type metal melting furnace | — | 1991-01-29 |