Assignee
Inventors
- Toshihiko Numazu (10 patents)
- Shigeru Hirosawa (7 patents)
- Tetsushi Kurokawa (2 patents)
- Kazuhiro Kameyama (4 patents)
- Noriki Ono (13 patents)
- Yasuhiro Tsuyuki (12 patents)
- Seiji Tachibana (9 patents)
- Eiichi Nara (3 patents)
US Patent 6463231 · Granted Oct 8, 2002