Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826519 | Multilayer filter element | Tokuya Miyagi, Akihisa Inoue, Taisuke Ootsubo | 1989-05-02 |
| 4663041 | Fluorocarbon filter element | Tokuya Miyagi, Akihisa Inoue, Katushi Hamada, Yoshihiro Hori | 1987-05-05 |
| 4588464 | Method of producing a fluorocarbon filter element | Tokuya Miyagi, Akihisa Inoue, Katushi Hamada, Yoshihiro Hori | 1986-05-13 |