Assignee
Inventors
- Tetsuo Sakai (91 patents)
- Keiji Ishii (3 patents)
- Mizumoto Ushirozawa (3 patents)
- Yoshimichi Takano (13 patents)
- Yukio Murakami (11 patents)
- Yasushi Motoyama (3 patents)
- Kazuo Takahashi (213 patents)
US Patent 5652478 · Granted Jul 29, 1997