Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11559183 | Wet sheet for cleaning | — | 2023-01-24 |
| 11452427 | Cleaning sheet | Shinya Izumi, Asako Fushimi | 2022-09-27 |
| 11439290 | Cleaning tool | Shinya Izumi, Asako Fushimi | 2022-09-13 |
| 11382482 | Cleaning sheet | Asako Fushimi | 2022-07-12 |
| 11317781 | Cleaning tool | Asako Fushimi | 2022-05-03 |
| 11071434 | Cleaning head and cleaning tool | — | 2021-07-27 |
| 4998283 | Screen device | Tsutomu Nishida, Kazumi Kawashima, Kazuyasu Yamamoto, Naoji Okumura, Yasuaki Sakanishi | 1991-03-05 |