Assignee
Inventors
- Shigeru Sugano (12 patents)
- Takashi Takebayashi (10 patents)
- Shigekazu Nagai (137 patents)
- Yoshiharu Ito (34 patents)
- Mitsuhiro Saito (24 patents)
- Hiroshi Matsushima (42 patents)
- Akio Saitoh (48 patents)
US Patent 5617338 · Granted Apr 1, 1997