Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6407900 | Lightning protection system for wind power generation installation | Shingo Shirakawa, Kazuo Suzuki | 2002-06-18 |
| 5498849 | Structure of metal container having trunk pipe and branch pipe, and manufacturing method and apparatus therefor | Osamu Isshiki, Masaki Murashita, Osamu Matsushima, Sadao Nakagawa, Koji Goto +7 more | 1996-03-12 |
| 5444206 | Structure of metal container having trunk pipe and branch pipe, and manufacturing method and apparatus therefor | Osamu Isshiki, Masaki Murashita, Osamu Matsushima, Sadao Nakagawa, Koji Goto +7 more | 1995-08-22 |
| 4675773 | Transmission line protection system | Shingo Shirakawa, Seiichi Maruyama, Eichi Okamoto, Kenji Kohara | 1987-06-23 |
| 4658329 | Gas-insulated switchgear apparatus | Yukio Kamura, Tohru Tsubaki, Satoshi Miwada, Naoki Amano | 1987-04-14 |
| 4587592 | Zinc oxide lightning protector | Kouichi Nakano, Seiichi Maruyama, Masatomo Sato | 1986-05-06 |
| 4570202 | Gas-insulated switchgear equipment | Isao Nishida, Koji Sasaki, Shigetaka Takeuchi, Takeshi Takahashi | 1986-02-11 |
| 4403125 | Gas-insulated disconnecting switch | Yukinori Yamaoka, Sigetaka Takeuchi, Kazuaki Oishi, Koji Sasaki | 1983-09-06 |
| 4354220 | Gas insulated power switch-gear apparatus | Kazuaki Oishi | 1982-10-12 |
| 4321651 | Enclosed-type zinc-oxide surge arrester | Jun Ozawa, Yoshi Akatsu, Katsuji Shindo, Akio Mizukoshi, Seiichi Maruyama +1 more | 1982-03-23 |
| 4263491 | Method for checking electric contacts of an enclosed-type switching device and an auxiliary apparatus for use with the switching device to use the method | Masaki Murashita, Hiroshi Itoh, Shigeo Shiono, Takeshi Takahashi | 1981-04-21 |
| 4237520 | Gas insulated switch-gear apparatus | Kazuaki Oishi, Yutaka Kitano | 1980-12-02 |
| 4215256 | Gas-insulated switchgear apparatus | Minoru Sakaguchi, Kazuaki Oishi, Tuneo Kishi | 1980-07-29 |
| 4207446 | Grounded tank type gas circuit breaker | Kouji Sasaki, Michio Moriya | 1980-06-10 |