Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5240540 | Method for producing filter element | Noriya Matsumoto, Hajime Akado, Yoshihiro Taki, Kazumi Nonoyama, Takanari Okumura | 1993-08-31 |
| 5049326 | Filter element and manufacture method thereof | Noriya Matsumoto, Hajime Akado, Yoshihiro Taki, Shuji Yamaguchi | 1991-09-17 |
| 5002666 | Filter element and manufacture method thereof | Noriya Matsumoto, Hajime Akado, Yoshihiro Taki, Shuji Yamaguchi | 1991-03-26 |