Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12334816 | Noise reduction device, power conversion device, vehicle, and noise reduction method | Atsushi Seki, Junichi Yukawa | 2025-06-17 |
| 12231037 | Switching power supply device | Atsushi Seki | 2025-02-18 |
| 11770068 | Switching power supply device | Atsushi Seki | 2023-09-26 |
| 11695324 | Power converter and moving body | Junichi Yukawa, Zenyou Tei, Hiroyuki Handa | 2023-07-04 |
| 11431005 | High-temperature operating fuel cell system | Kunihiro Ukai, Masakazu Aoki | 2022-08-30 |
| 10700374 | High-temperature operating fuel cell system | Kunihiro Ukai, Masakazu Aoki | 2020-06-30 |
| 10573906 | Fuel cell device | Kunihiro Ukai, Masakazu Aoki | 2020-02-25 |
| 10461341 | Fuel cell system | TAKASHI KAKUWA, Noboru Taniguchi | 2019-10-29 |
| 10122026 | Fuel cell system | Kunihiro Ukai | 2018-11-06 |
| 10122027 | High-temperature operating fuel-cell module | Kunihiro Ukai, Aichi Aida | 2018-11-06 |
| 9991527 | Heat exchanger, method of producing heat exchanger, and fuel cell system | Kunihiro Ukai, Masakazu Aoki, Norio Katsushita | 2018-06-05 |
| 9543858 | Semiconductor device and inverter using same | Osamu Kusumoto, Keiji Akamatsu, Masao Uchida | 2017-01-10 |
| 9251836 | Optical disc apparatus, sheet member, and method for cleaning objective lens | Kousei Sano, Hideki Aikoh | 2016-02-02 |
| 8891254 | Power converter and battery charger using the same | Satoshi Kominami, Satoshi Moriguchi | 2014-11-18 |
| 8773063 | Motor drive system and control method thereof | — | 2014-07-08 |
| 8729846 | Motor drive system and control method thereof | — | 2014-05-20 |
| 8570845 | Optical head and optical information device | Hidenori Wada, Masahito Nakao | 2013-10-29 |
| 8488431 | Optical head and optical information device | Hidenori Wada | 2013-07-16 |
| 8446399 | Driving device and driving method of plasma display panel, and plasma display apparatus | Takahiko Origuchi, Hidehiko Shoji | 2013-05-21 |
| 8427928 | Optical head and optical information device | Kousei Sano, Takashi Haruguchi, Osamu Kajino | 2013-04-23 |
| 8395980 | Optical head device, optical information device, and information processing device | Yoshiaki Komma, Joji Anzai, Yasumori Hino, Kousei Sano, Keisuke Fujimoto +2 more | 2013-03-12 |
| 8130624 | Optical head device for forming light spot on disc-shaped information medium | Hideki Aikoh | 2012-03-06 |
| 8130600 | Drive device, optical head, and optical disk recording/reproducing device | Masayuki Shiwa | 2012-03-06 |
| 8108884 | Optical disk recording/reproducing device and optical head | Hideki Aikoh, Masayuki Shiwa | 2012-01-31 |
| 7915832 | Plasma display panel drive circuit and plasma display apparatus | Yasuhiro Arai, Toshikazu Nagaki, Satoshi Ikeda | 2011-03-29 |