Assignee
Inventors
- Toru Kosaka (43 patents)
- Tatsuo Amanuma (31 patents)
- Yoshiaki Ohtsubo (24 patents)
- Akira Katayama (140 patents)
- Jun Nagai (56 patents)
- Hiroshi Wakabayashi (155 patents)
- Hideya Inoue (80 patents)
- Naoki Watanabe (244 patents)
US Patent 5216459 · Granted Jun 1, 1993