Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7597773 | Producing method of laminated filter | Yoshihisa Sanami | 2009-10-06 |
| 5851250 | Filter element for air cleaner | Hiromichi Sugie, Tsuyoshi Minari, Yasunari Arai, Yukihisa Horikoh, Hirotsugu Kojima | 1998-12-22 |
| 5755844 | Resin-made air cleaner | Yasunari Arai, Yoshiyuki Murao, Yasuhiro Okazaki, Yukihisa Horikou, Tsuyoshi Minari | 1998-05-26 |