Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840042 | Heat pump system | Mitsuhiro Ikoma, Kazuo Nakatani, Takeshi Tomizawa, Koji Arita | 1989-06-20 |
| 4803572 | Recording/reproducing method and apparatus of magnetic disk unit in which playback commences before the magnetic head is completely centered on the track | Toshiyuki Haruna, Kenji Nishimura, Kiyotaka Takahashi, Tsuneo Hirose, Katsuhiro Tsuneta +4 more | 1989-02-07 |