Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5983413 | High performance flush toilet | Ryosuke Hayashi, Ken Wijaya, Kinya Arita, Shinji Shibata, Hiroyuki Matsushita | 1999-11-16 |
| 5926863 | Low flush volume toilet | Kinya Arita, Shinji Shibata | 1999-07-27 |
| 5085399 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Atsuo Makita, Hirofumi Takeuchi | 1992-02-04 |
| 4971106 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Atsuo Makita, Hirofumi Takeuchi | 1990-11-20 |
| 4967794 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Atsuo Makita, Hirofumi Takeuchi | 1990-11-06 |
| 4955535 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Atsuo Makita, Hirofumi Takeuchi | 1990-09-11 |