Assignee
Inventors
- Toshio Yamabata (6 patents)
- Satoshi Otsuka (100 patents)
- Mitsuhiro Umeta (6 patents)
- Fumio Rokkaku (3 patents)
- Takenori Yamamori (4 patents)
- Minoru Fujisawa (29 patents)
- Koji Hara (66 patents)
US Patent 5212676 · Granted May 18, 1993