Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7174634 | Method for producing a fluid treatment device having a honeycomb member | Tohru Irie | 2007-02-13 |
| 7174635 | Method for producing a columnar member container | Tohru Irie, Yukinori Suzuki | 2007-02-13 |
| 7111392 | Method of producing a fragile substrate container | Tohru Irie | 2006-09-26 |
| 6530256 | Method and device for expanding tube material | Tohru Irie, Hisashi Hayakawa | 2003-03-11 |
| 6223434 | Muffler and its manufacturing method | — | 2001-05-01 |