Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5502845 | Siphon-jet flush water supply system for toilet stool | Ryosuke Hayashi, Katsuichi Irifune, Yoshiki Ohta, Takashi Yoshioka, Osamu Tsutsui +5 more | 1996-04-02 |
| 5469586 | Toilet bowl flushing device | Osamu Tsutsui, Hisato Haraga, Hirofumi Takeuchi | 1995-11-28 |
| 5315719 | Water closet flushing apparatus | Osamu Tsutsui, Hirofumi Takeuchi, Shinji Shibata, Noboru Shinbara | 1994-05-31 |
| 5259073 | Water closet flushing apparatus | Osamu Tsutsui, Hirofumi Takeuchi, Shinji Shibata, Noboru Shinbara | 1993-11-09 |
| 5204999 | Flush water supply system for toilet stool | Hirofumi Takeuchi, Shinji Shibata, Noboru Shimbara | 1993-04-27 |
| 5155870 | Water closet flushing apparatus | Osamu Tsutsui, Hirofumi Takeuchi, Shinji Shibata, Noboru Shinbara | 1992-10-20 |
| 5133089 | Water closet flushing apparatus | Osamu Tsutsui, Hirofumi Takeuchi, Shinji Shibata, Noboru Shinbara | 1992-07-28 |
| 5109550 | Flush water supply system for toilet stool | Hirofumi Takeuchi, Shinji Shibata, Noboru Shimbara | 1992-05-05 |
| 5085399 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Hirofumi Takeuchi, Ryoichi Tsukada | 1992-02-04 |
| 5052060 | Flush water supply system for toilet stool | Hirofumi Takeuchi, Shinji Shibata, Noboru Shimbara | 1991-10-01 |
| 4989277 | Toilet bowl flushing device | Osamu Tsutsui, Hisato Haraga, Hirofumi Takeuchi | 1991-02-05 |
| 4971106 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Hirofumi Takeuchi, Ryoichi Tsukada | 1990-11-20 |
| 4967794 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Hirofumi Takeuchi, Ryoichi Tsukada | 1990-11-06 |
| 4955535 | Automatically operating valve for regulating water flow and faucet provided with said valve | Osamu Tsutsui, Hisato Haraga, Kinya Arita, Hirofumi Takeuchi, Ryoichi Tsukada | 1990-09-11 |
| 4922861 | Multiple-purpose instantaneous gas water heater | Osamu Tsutsui, Hideki Kawaguchi, Keiji Hayashi, Masahiro Kayano, Shingo Tanaka +2 more | 1990-05-08 |
| 4819587 | Multiple-purpose instantaneous gas water heater | Osamu Tsutsui, Hideki Kawaguchi, Keiji Hayashi, Masahiro Kayano, Shingo Tanaka +2 more | 1989-04-11 |