Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6538877 | Gas insulation switch | Hiroki Honma, Koji Sasaki | 2003-03-25 |
| 6525917 | Power transforming system and method | Hiroshi Arita, Takahide Matsuo, Satoshi Watahiki, Shingo Shirakawa, Naoki Kasahara +1 more | 2003-02-25 |
| 6424162 | Insulated device diagnosing system that prepares detection data from partial discharge signal such that periodic elements are given to different specific frequencies of the partial discharge signal | Toshiaki Rokunohe, Fumihiro Endo, Ryouichi Shinohara | 2002-07-23 |
| 6373687 | Gas insulation switch | Hiroki Honma, Koji Sasaki | 2002-04-16 |
| 6292356 | Gas insulation switch | Hiroki Honma, Koji Sasaki | 2001-09-18 |
| 6252763 | Gas-insulated electrical apparatus | Yoshikatsu Enokida, Kenji Annou, Manabu Takamoto, Hirohiko Yatsuzuka, Masahiro Shimokawa | 2001-06-26 |
| 6218627 | Bushing | Katsuji Shindo, Toshiaki Rokunohe, Fumihiro Endo | 2001-04-17 |
| 6063997 | Gas insulated electric apparatus | Fumihiro Endo, Tomoaki Utsumi, Toshio Ishikawa, Shuzo Iwaasa | 2000-05-16 |
| 6002085 | Gas insulated switchgear | Tomoaki Utsumi, Toshio Ishikawa, Shuzo Iwaasa, Fumihiro Endo | 1999-12-14 |
| 5982181 | Insulated device diagnosing system for diagnosing device based upon partial discharge signal data analyzed by frequency | Toshiaki Rokunohe, Fumihiro Endo, Ryouichi Shinohara | 1999-11-09 |
| 5929989 | Optical pressure detection method and apparatus | Sadao Mori, Toshio Akatsu | 1999-07-27 |
| 5798484 | Enclosed electric conductor arrangement | Fumihiro Endo, Kazutoshi Asano | 1998-08-25 |
| 5699219 | Ground fault current limiter and method of limiting ground fault current | Hiroshi Arita, Junzo Kida, Yoshiaki Matsui, Shigeyuki Sugimoto, Sadanori Neo | 1997-12-16 |
| 5689088 | Gas insulated device, gas insulated switchgear, gas insulated bus line, and cable direct-coupled gas insulated switchgear | Toshiaki Rokunohe, Fumihiro Endo, Kenji Anno | 1997-11-18 |
| 5627941 | Method of configuring a neural network and a diagnosis/control system using the neural network | Isao Takahashi, Fumihiro Endo | 1997-05-06 |
| 5601735 | Long-sized tubular grounding container unit for gas-insulated electrical device and laser welding device for manufacturing the same | Hideo Kawamoto, Shinji Fukuda, Masayoshi Hashiura, Osamu Isshiki, Shigetaka Takeuchi +1 more | 1997-02-11 |
| 5598509 | Method of configuring a neural network and a diagnosis/recognition system using the same | Isao Takahashi, Fumihiro Endo | 1997-01-28 |
| 5473494 | Electrical power supply system | Yukio Kurosawa, Youichi Ohshita, Masaru Watanabe, Isao Nishida, Yoshihito Asai | 1995-12-05 |
| 5410243 | Three-phase collected type optical current transformer | Yosinori Tagawa, Genzi Takahashi, Akihiko Horide | 1995-04-25 |
| 5305174 | Method of and device for protecting electrical power system | Masao Morita, Toshiaki Ueda, Yukio Kurosawa, Hiroshi Arita | 1994-04-19 |
| 5274205 | Gas blast, puffer type circuit breaker with improved nozzle | Masanori Tsukushi, Akira Hashimoto, Minori Satoh, Yukio Kurosawa, Kunio Hirasawa +1 more | 1993-12-28 |
| 5256976 | Power apparatus and method of location of a fault in a power apparatus on the basis of attenuation coefficients of electromagnetic coefficients of fault generated electromagnetic waves | Toshio Ishikawa, Fumihiro Endo, Shuzo Iwaasa, Tomoaki Utsumi, Yoshinori Tagawa | 1993-10-26 |
| 5253180 | Apparatus and method for diagnosis of power appliances | Kiyoshi Okumura, Yoshinori Tagawa | 1993-10-12 |
| 5231256 | Puffer type gas-insulated circuit breaker | Toru Tsubaki, Koji Sasaki, Naoyuki Yamamoto, Koji Kurokawa, Naoki Amano | 1993-07-27 |
| 5214595 | Abnormality diagnosing system and method for a high voltage power apparatus | Jun Ozawa, Fumihiro Endo, Youichi Ohshita, Izumi Yamada, Hiroshi Yamada +2 more | 1993-05-25 |