Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5114575 | Oil filter | Hisashi Yano, Junsuke Yabumoto | 1992-05-19 |
| 4997556 | Oil filter I | Hisashi Yano, Hiroyuki Ihara, Junsuke Yabumoto, Masanori Nishiya | 1991-03-05 |
| 4976854 | Oil filter II | Hisashi Yano, Junsuke Yabumoto | 1990-12-11 |