Assignee
Inventors
- Akira Ohmori (43 patents)
- Yoshiki Shimizu (25 patents)
- Motonobu Kubo (51 patents)
- Kouzaburou Nakamura (9 patents)
- Tohru Maruno (14 patents)
- Norio Murata (10 patents)
- Hideo Kobayashi (14 patents)
US Patent 5157148 · Granted Oct 20, 1992