Assignee
Inventors
- Yasuhiro Shinma (24 patents)
- Muneharu Morioka (17 patents)
- Norio Fukasawa (32 patents)
- Yuzo Hamanaka (9 patents)
- Tadashi Uno (13 patents)
- Hirohisa Matsuki (48 patents)
- Kenichi Nagashige (16 patents)
US Patent 6471501 · Granted Oct 29, 2002