Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5260728 | Apparatus for reducing, enlarging and projecting image information | Kouji Kuwabara, Makoto Yano, Kiyoshi Saito, Kiyoshi Okumura, Minoru Fujimoto | 1993-11-09 |
| 4667072 | Gas-insulated circuit breaker | Fumihiro Endo, Shigeo Kobayashi | 1987-05-19 |
| 4588660 | Fuel cell | Toshio Shimizu, Takanori Satoo, Ryota DOI, Motoo Yamaguchi, Tsutomu Tsukui | 1986-05-13 |
| 4578730 | High-voltage DC circuit breaker apparatus | Shunji Tokuyama, Kooji Suzuki, Kunio Hirasawa, Keiji Arimatsu | 1986-03-25 |
| 4562322 | SF.sub.6 Gas arc extinguishing electric apparatus and process for producing the same | Motoo Yamaguchi, Isamu Sone, Kunio Hirasawa, Akio Nishikawa, Hiroshi Suzuki +2 more | 1985-12-31 |
| 4211903 | Electromagnetic puffer type gas circuit breaker | Masanori Tsukushi, Katsuichi Kashimura, Osamu Koyanagi, Kunio Hirasawa | 1980-07-08 |
| 4182942 | Puffer-type gas-blast circuit breaker | Osamu Koyanagi, Ken-ichi Natsui | 1980-01-08 |