Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12306153 | Ion chromatograph | Masanori Fujiwara | 2025-05-20 |
| 12031957 | Ion suppressor | Masanori Fujiwara | 2024-07-09 |
| 11982653 | Ion chromatograph and ion component analysis method | Masanori Fujiwara | 2024-05-14 |
| 11534700 | Ion suppressor and ion chromatograph | — | 2022-12-27 |
| 11531010 | Ion suppressor and ion chromatograph | Masanori Fujiwara | 2022-12-20 |
| 10031543 | Power management system and refrigerator | Yasunari Yamato, Go Maeda, Takashi Oishi, Makoto Okabe | 2018-07-24 |
| 9535034 | Ion chromatograph | Yukio Oikawa, Shigeyoshi Horiike | 2017-01-03 |
| 8991203 | Electrostatic atomizing apparatus, appliance, air conditioner, and refrigerator | Makoto Okabe, Reiji Morioka, Masumi Handa, Hiroshi Nakashima | 2015-03-31 |
| 7981284 | Suppressor utilizing micro ion exchange tube and ion chromatograph utilizing the same | Yukio Oikawa, Shigeyoshi Horiike, Hiroaki Nakanishi | 2011-07-19 |
| 6637235 | Fridge-freezer | Toshie Hiraoka, Keiji Ohya, Naho Misumi | 2003-10-28 |
| 6055826 | Refrigerator | Toshie Hiraoka, Isao Naito, Noriyuki Suda, Mutsumi Kato, Hisashi Matsui +1 more | 2000-05-02 |
| 6044654 | Refrigerator | Keiko Igari, Mutsumi Kato, Kouichi Hashimoto, Takenori Adachi | 2000-04-04 |
| 5983654 | Freezer-equipped refrigerator | Kazu Yamamoto, Toshie Hiraoka, Mutsumi Kato, Kunihiko Yagi | 1999-11-16 |