Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9285054 | Control valve | Michio Matsumoto, Masaaki Tonegawa | 2016-03-15 |
| 6484950 | Expansion valve | Hisatoshi Hirota, Kuniharu Baba, Takeshi Kaneko | 2002-11-26 |
| 6352207 | Expansion valve | Satoshi Kawakami, Tatsuo Ito, Shigeyoshi Ueno | 2002-03-05 |
| 6296194 | Expansion valve | Hisatoshi Hirota, Shinji Saeki, Masaichi Kawahata, Toshiyuki Shiota, Takashi Kobayashi | 2001-10-02 |
| D415564 | Thermostatic expansion valve for vehicle air conditioning systems | Hiroaki Masuhara | 1999-10-19 |
| 5127237 | Expansion valve | Tokumi Tsuquwa | 1992-07-07 |