Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6295264 | Optical disk device having cooling fan with speed proportional to rotational speed of spindle motor | — | 2001-09-25 |
| 6008992 | Locking device | — | 1999-12-28 |
| 5722818 | Suction valve arrangement for a hermetic compressor | Michio Ohta, Shuji Kawashima | 1998-03-03 |
| 5328338 | Hermetically sealed electric motor compressor | Yutaka Hirano, Ryuji Watanabe, Kiyoshi Tanaka, Hiroshi Takagi | 1994-07-12 |
| 4918806 | Method for manufacturing a piston | Ryuji Watanabe, Motohiko Kosano | 1990-04-24 |
| 4913001 | Piston assembly for compressors | Ryuji Watanabe, Kiyoshi Tanaka | 1990-04-03 |
| 4573880 | Hermetically sealed motor compressor | Yutaka Hirano, Masaaki Tanaami, Motohiko Kosano, Hiroshi Takagi, Yoshio Ishiai +1 more | 1986-03-04 |