Assignee
Inventors
- Mikio Yamanaka (21 patents)
- Masuhiro Fukaya (7 patents)
- Nobuhiro Fujita (55 patents)
- Yasushi Ishikawa (52 patents)
- Toshikazu Nakagawa (7 patents)
- Masao Yashiro (5 patents)
- Hitoshi Ohta (43 patents)
US Patent 5665669 · Granted Sep 9, 1997