Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8829890 | Optical voltage sensor | Masao Takahashi, Junichi Sato, Takashi Miyabe, Tsuyoshi Kuwabara | 2014-09-09 |
| 8319958 | Phase modulator, phase modulator assembly, and photosensor | Kinichi Sasaki, Masao Takahashi, Masahiro Hamaguchi, Takashi Miyabe, Tsuyoshi Kuwabara | 2012-11-27 |
| 8115473 | Optical voltage transformer | Junichi Sato, Masao Takahashi, Miwa Takeuchi, Teruhiko Maeda, Mitsuhiro Fujikawa +1 more | 2012-02-14 |
| 6812591 | Power control device with electric double layer capacitor unit cells | Noriko Kawakami, Tomotsugu Ishizuka, Kazuhiro Nakajima | 2004-11-02 |
| 5258310 | Method of diagnosing aged degradation of oil-filled electrical equipments | Keiichi Abe | 1993-11-02 |
| 5075629 | Partial discharge detecting device for electrical equipments | Keiichi Abe | 1991-12-24 |