Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12196325 | Compression ring | Takashi Ozawa, Akira Hikone | 2025-01-14 |
| 12173799 | Oil control ring | Akira Hikone, Noriaki Ayuzawa, Toshihiro Yamaoka, Naoki Umeda | 2024-12-24 |
| 6339336 | Moving magnet type galvanometer | Yutaka Oisugi | 2002-01-15 |