Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821412 | Method of producting an electric contact | Tatsuhiro Tani, Rokuro Kikuchi, Akio Ohyama | 1989-04-18 |
| 4711620 | Moving vane type compressor | Yukio Takahashi, Isao Hayase, Keijirou Amano, Masao Mizukami | 1987-12-08 |