Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490985 | Boiler | Kenji Yamamoto, Hironobu Kobayashi, Toshikazu Tsumura, Kenji Kiyama | 2002-12-10 |
| 6338304 | Boiler | Kenji Yamamoto, Hironobu Kobayashi, Toshikazu Tsumura, Kenji Kiyama | 2002-01-15 |