Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6159428 | Structure of gasified and melting furnace | Yuichi Yamakawa, Sunao Nakamura, Tomohiro Yoshida, Yasuo Suzuki | 2000-12-12 |
| 5375996 | Combustion apparatus having heat-recirculation function | Sunao Nakamura, Felix J. Weinberg | 1994-12-27 |
| 5375997 | Combustion apparatus having heat-recirculating function | Sunao Nakamura, Felix J. Weinberg | 1994-12-27 |