Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6013214 | Method for manufacturing filter element | Ichihiro Kato, Takeharu Maekawa | 2000-01-11 |
| 5888442 | Method of manufacturing a filter element | Kazuo Kometani, Toshiaki Nakayama, Takanari Takagaki, Hideo Kamo, Minoru Honda | 1999-03-30 |
| 5720790 | Filter element | Kazuo Kometani, Toshiaki Nakayama, Takanari Takagaki, Hideo Kamo, Minoru Honda | 1998-02-24 |
| 4747816 | Apparatus for making a filter from a material for a filter element | Harukazu Matsuyama, Tetsuo Kato, Yasuo Hibi, Masanori Suzuki, Yoshimitsu Yamaguchi | 1988-05-31 |
| 4746432 | Filter element with zig-zag pleats | Yoshihiro Taki, Hajime Akado, Keizo Funae | 1988-05-24 |
| 4738778 | Zig zag filter element | Yoshihiro Taki, Susumu Miyakawa, Hajime Akado, Hitoshi Harada, Atsushi Sakaida | 1988-04-19 |
| 4640779 | Filter element | Yoshihiro Taki, Hajime Akado, Keizo Funae | 1987-02-03 |