Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6702879 | Air filtering material for air cleaning | Kazutaka Yokoyama | 2004-03-09 |
| 6694588 | Method of renovating and recycling a vehicle | Kotaro Shige, Masataka Kumata, Fusataka Bannai, Kenji Kobayashi | 2004-02-24 |