Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7399333 | Filter element and process for producing the same | Koji Nakanishi, Yoshinori Ichihara | 2008-07-15 |
| 4551240 | Apparatus for classifying particulate material with air currents | Masaru Beppu, Takeshi Hazeyama, Toshiyuki Nashimoto | 1985-11-05 |