Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6591498 | Method of producing a catalytic converter | Masashi Ota | 2003-07-15 |
| 6530256 | Method and device for expanding tube material | Akinobu Morikawa, Hisashi Hayakawa | 2003-03-11 |