Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1094909 | Pet playpen | — | 2025-09-23 |
| D1093768 | Toilet for pet | — | 2025-09-16 |
| D1086609 | Toilet for pet | — | 2025-07-29 |
| 11753809 | Flush toilet | Kenichi Nakamura | 2023-09-12 |
| D965446 | Water timer | — | 2022-10-04 |
| 11384521 | Flush toilet | Kenichi Nakamura, Hiroshi Hashimoto | 2022-07-12 |
| D954566 | Water timer | — | 2022-06-14 |
| 11346092 | Flush toilet | Takumi Tsuchitani, Hiroshi Hashimoto | 2022-05-31 |
| 11326333 | Flush toilet | Kenichi Nakamura, Hiroshi Hashimoto | 2022-05-10 |
| 11274428 | Flush toilet | Shinichi Urata, Kenichi Nakamura | 2022-03-15 |
| 9689155 | Flush water volume regulator, flush water tank apparatus comprising said flush water volume regulator, and flush toilet comprising said flush water tank | Koki SHINOHARA, Hideki Tanimoto, Takashi Oogami, Masateru Shiraishi | 2017-06-27 |
| 9677260 | Flush toilet | Tsubasa Miyake, Haruhiko Fukumoto, Nobuhiro Motohashi | 2017-06-13 |
| 9303395 | Flush toilet | Shigehisa Shirakawa | 2016-04-05 |