Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663684 | Dust collecting filter cloth and bag filter | Makoto Nakahara, Koji Kawakami | 2003-12-16 |
| 6583072 | Fabric from impregnated polyphenylene sulfide fibers | Koji Kawakami, Kiyoshi Aihara | 2003-06-24 |