Assignee
Inventors
- Hiroshi Yokota (147 patents)
- Ryuichi Naito (25 patents)
- Hiroyuki Hirano (133 patents)
- Katsumi Ishii (57 patents)
- Shinichi Naohara (22 patents)
- Yoshifumi Tsukada (6 patents)
- Kanya Matsumoto (13 patents)
US Patent 5848049 · Granted Dec 8, 1998