Assignee
Inventors
- Shinichi Imade (59 patents)
- Kazunori Shionoya (6 patents)
- Eishi Ikuta (9 patents)
- Koji Taguchi (81 patents)
- Toyoo Nishiyama (7 patents)
- Seiichi Wakamatsu (11 patents)
- Tatsuo Nagasaki (87 patents)
US Patent 4880011 · Granted Nov 14, 1989