Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D879270 | Water heater | Ryoichi Shono | 2020-03-24 |
| D879271 | Water heater | Ryoichi Shono | 2020-03-24 |
| D855162 | Water heater | Ryoichi Shono | 2019-07-30 |
| D845453 | Water heater | Ryoichi Shono | 2019-04-09 |
| D842443 | Water heater | Ryoichi Shono | 2019-03-05 |
| D839403 | Water heater | Ryoichi Shono | 2019-01-29 |
| D833589 | Water heater | Ryoichi Shono | 2018-11-13 |
| 6812177 | Porous high-alumina fused cast refractory and method of its production | — | 2004-11-02 |
| 6405564 | Vacuum degassing apparatus for molten glass | Yusuke Takei, Masataka Matsuwaki, Toshiyasu Kawaguchi, Takashi Kijima, Atsushi Tanigaki +2 more | 2002-06-18 |
| 6119484 | Vacuum degassing apparatus for molten glass | Yusuke Takei, Masataka Matsuwaki, Toshiyasu Kawaguchi, Takashi Kijima, Atsushi Tanigaki +2 more | 2000-09-19 |
| 5466643 | High zirconia fused cast refractories | Otojiro Kida, Yoshihisa Beppu | 1995-11-14 |
| 5344801 | High zirconia fused cast refractory | Otojiro Kida | 1994-09-06 |
| 5086020 | High zirconia fused cast refractory | Kouzou Sakai, Nobuyuki Kido | 1992-02-04 |
| 4705763 | High zirconia fused refractory product | Atsushi Hayashi, Kiyoharu Kuwabara, Kohzo Sakai | 1987-11-10 |