Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1058780 | Water heater | Tomoe Usami, Yoshikazu Kubo, Eri Horii | 2025-01-21 |
| D1053999 | Water heater | Eri Horii, Yoshikazu Kubo, Tomoe Usami | 2024-12-10 |
| D1042760 | Exhaust vent cover for water heater | Yoshikazu Kubo | 2024-09-17 |
| D957597 | Water heater | Yoshikazu Kubo, Tomoe Usami, Eri Horii | 2022-07-12 |
| D941972 | Water heater | Yoshikazu Kubo, Tomoe Usami, Eri Horii | 2022-01-25 |
| D832118 | Remote control for water heater | Katsunori Maegawa, Yoshikazu Kubo, Tomoe Usami | 2018-10-30 |
| D678219 | Remote control for home electronics | Katsunori Maegawa, Yoshikazu Kubo, Atsumi SUZUKI | 2013-03-19 |
| D616973 | Air heater | Katsunori Maegawa, Tetsuya Higuchi, Yoshikazu Kubo | 2010-06-01 |
| D615641 | Air heater | Katsunori Maegawa, Tetsuya Higuchi, Yoshikazu Kubo | 2010-05-11 |
| D615178 | Air heater | Katsunori Maegawa, Tetsuya Higuchi, Yoshikazu Kubo | 2010-05-04 |
| D533928 | Outdoor water heater | Katsunori Maegawa, Tetsuya Higuchi | 2006-12-19 |
| D532498 | Water heater | Katsunori Maegawa, Tetsuya Higuchi | 2006-11-21 |