Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11191399 | Toilet seat | Takeshi Hayashida, Nobuhiko Umeda, Shuhei Nishiyama, Takeshi Inada | 2021-12-07 |
| 11033159 | Toilet seat | Takeshi Hayashida, Nobuhiko Umeda, Shuhei Nishiyama, Takeshi Inada | 2021-06-15 |
| 10907334 | Sanitary washing device | Toshinari Yaoka, Keisuke Tashiro, Satoru Matsumoto, Shogo Kanda | 2021-02-02 |