Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6743270 | Filter and manufacturing method thereof | Kouichi Oda, Minoru Honda | 2004-06-01 |
| 6743274 | Filter and production method thereof | — | 2004-06-01 |
| 6732868 | Production method and apparatus for filter, forming die for filter, forming assembly for forming filter, and filter | Koushin Wakayama | 2004-05-11 |