Issued Patents All Time
Showing 1–11 of 11 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 |
| 6454827 | Filter medium and production method thereof | Kouichi Oda, Minoru Honda | 2002-09-24 |
| 5993580 | Process for manufacturing a filter element | Toshiaki Nakayama, Hideo Kamo, Yoshitaka Nishio, Tetsuro Okazono | 1999-11-30 |
| 5888442 | Method of manufacturing a filter element | Kazuo Kometani, Toshiaki Nakayama, Satoshi Inukai, Hideo Kamo, Minoru Honda | 1999-03-30 |
| 5720790 | Filter element | Kazuo Kometani, Toshiaki Nakayama, Satoshi Inukai, Hideo Kamo, Minoru Honda | 1998-02-24 |
| 5674302 | Automobile filter element | Toshiaki Nakayama, Hideo Kamo, Yoshitaka Nishio, Tetsuro Okazono | 1997-10-07 |
| 5562825 | Filter element having a flat and non-flat configuration | Katsuhisa Yamada, Yoshihiko Ohya, Yoshihiro Taki, Yoshimitsu Yamaguchi | 1996-10-08 |
| 5543007 | Filter element manufacturing method | Yasuo Nagai | 1996-08-06 |
| 5435870 | Filter element and manufacture method thereof | Yasuo Nagai, Noriaki Hashimoto, Yoshimitsu Yamaguchi | 1995-07-25 |