Assignee
- Chugoku Electric Power Co.
- Tohoku Electric Power Company
- Tokyo Electric Power Company Holdings, Incorporated
- Chubu Electric Power Company, Incorporated
- Hitachi
Inventors
- Hiroyuki Takeda (60 patents)
- Ichio Iseki (1 patents)
- Katsumi Kawai (4 patents)
- Hiroyuki Okajima (4 patents)
- Sigeru Kajiyama (4 patents)
- Sakae Sugiyama (10 patents)
- Kimio Kanda (7 patents)