Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830582 | Rotary type compressing apparatus employing exhaust gas control valve | — | 1989-05-16 |
| 4711617 | Rotary compressor | Fumiaki Sano, Fumio Wada, Koji Ishijima | 1987-12-08 |
| 4645429 | Rotary compressor | Fumiaki Sano, Koji Ishijima, Fumio Wada, Takuho Hirahara | 1987-02-24 |
| 4628963 | Refrigerant compressor discharge valve | Koji Ishijima, Fumiaki Sano, Fumio Wada | 1986-12-16 |
| 4624630 | Differential pressure lubrication system for rolling piston compressor | Takuho Hirahara, Koji Ishijima, Fumiaki Sano, Fumio Wada, Masahiro Sugihara | 1986-11-25 |
| 4611473 | Refrigeration system with integral check valve | Fumio Wada, Koji Ishijima, Fumiaki Sano | 1986-09-16 |
| 4592705 | Lubrication for rotary compressor vane | Sei Ueda, Takuho Hirahara, Koji Ishijima, Fumiaki Sano, Fumio Wada | 1986-06-03 |
| 4569645 | Rotary compressor with heat exchanger | Fumio Wada, Koji Ishijima, Yutaka Sato | 1986-02-11 |
| 4518330 | Rotary compressor with heat exchanger | Fumio Wada, Koji Ishijima, Yutaka Sato | 1985-05-21 |