Assignee
Inventors
- Hironobu Nishi (21 patents)
- Kenichi Yamaga (38 patents)
- Takanobu Asano (19 patents)
- Kazutoshi Sawado (2 patents)
- Masashi FUMOTO (2 patents)
- Shozo Ito (3 patents)
- Yoshinori Mochizuki (21 patents)
US Patent 5030057 · Granted Jul 9, 1991