Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10273672 | Flush toilet | Tatsunari HARASHIMA, Kenichi Nakamura, Shoko Imaizumi | 2019-04-30 |
| 10174489 | Flush toilet apparatus | Tatsunari HARASHIMA, Hidekazu Kitaura | 2019-01-08 |
| 10174490 | Flush toilet | Tatsunari HARASHIMA, Kenichi Nakamura, Shoko Imaizumi | 2019-01-08 |
| 9752310 | Flush toilet apparatus | Hidekazu Kitaura, Tomohiro Iwabata | 2017-09-05 |
| 9745731 | Flush toilet apparatus | Hidekazu Kitaura, Tomohiro Iwabata | 2017-08-29 |
| 9670658 | Water closet device | Hidekazu Kitaura, Takahiro Maruyama | 2017-06-06 |
| 9476191 | Flush toilet apparatus | Hidekazu Kitaura, Tomohiro Iwabata, Yoshiki Ota, Takashi Yoshioka | 2016-10-25 |
| 9476193 | Flush toilet apparatus | Hidekazu Kitaura, Tomohiro Iwabata | 2016-10-25 |
| 9328495 | Flush toilet apparatus | Hidekazu Kitaura, Tomohiro Iwabata, Yoshiki Ota, Takashi Yoshioka | 2016-05-03 |
| 9021622 | Flush toilet device | Hidekazu Kitaura, Tomohiro Iwabata, Yoshiki Ota, Takashi Yoshioka | 2015-05-05 |
| 7740191 | Shower device and shower booth | Takahiro Ohashi, Kazuki KURODA | 2010-06-22 |