Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D483844 | Gas water heater | Nobuyuki Yamamoto, Hideki Yamaguchi, Takanori Nagano, Teizo Nanbu | 2003-12-16 |
| D483451 | Gas water heater | Nobuyuki Yamamoto, Hideki Yamaguchi, Takanori Nagano, Teizo Nanbu | 2003-12-09 |
| D483452 | Gas water heater | Nobuyuki Yamamoto, Hideki Yamaguchi, Takanori Nagano, Teizo Nanbu | 2003-12-09 |
| D483453 | Gas water heater | Nobuyuki Yamamoto, Hideki Yamaguchi, Takanori Nagano, Teizo Nanbu | 2003-12-09 |