Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11111658 | Flush toilet | Tsubasa Miyake, Hironori Yamasaki, Takashi Yoshioka, Koichiro Hiwa | 2021-09-07 |
| 9328494 | Flush water tank apparatus and discharge apparatus | Takashi Yoshioka, Shu Kashirajima, Takashi Kanzaki, Yoshikazu Anami | 2016-05-03 |