Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12155212 | Power control system and device | Reiji Kawashima, Keisuke Ohta, Hiroki Kojima | 2024-11-26 |
| 12095434 | Current distortion reduction apparatus | Ryou Matsuyama, Reiji Kawashima | 2024-09-17 |
| 11750112 | Inverter device including a bootstrap circuit | Masahide Fujiwara, Nobuyasu Hiraoka, Keito KOTERA, Taku Itou, Reiji Kawashima | 2023-09-05 |
| 11611285 | Power converter and air conditioner | Hirotaka Doi, Tomoisa Taniguchi | 2023-03-21 |
| 11211890 | Power conversion apparatus and air-conditioning apparatus | Hirotaka Doi, Yukihide Yamane | 2021-12-28 |
| 10797584 | Active filter device, air conditioning device, and air conditioning system | Reiji Kawashima, Takayuki Fujita | 2020-10-06 |
| 9018871 | Power conversion apparatus | Takeshi Ashida, Hiroshi Hibino, Naoto Kobayashi, Michihiro Nakagawa, Nobuki Kitano | 2015-04-28 |
| 6922803 | Test method of semiconductor intergrated circuit and test pattern generator | Michinobu Nakao, Kazumi Hatayama, Koichiro Natsume, Yoshikazu Kiyoshige, Masato Hamamoto +2 more | 2005-07-26 |
| 6670201 | Manufacturing method of semiconductor device | Masato Hamamoto, Atsushi Wakahara, Hideyuki Takahashi, Keiichi Higeta, Mitsugu Kusunoki +1 more | 2003-12-30 |
| 6438378 | Device using selected receivers to facilitate handoff to a base transceiver station in a mobile communication system | — | 2002-08-20 |