Assignee
Inventors
- Nobuaki Ishii (23 patents)
- Koichi Wada (39 patents)
- Kazuo Sekiguchi (6 patents)
- Michihiro Takama (6 patents)
- Shinobu Ito (19 patents)
- Kotaro Yano (113 patents)
- Yasuo Saito (102 patents)
- Keiji Kawasaki (37 patents)
US Patent 6235270 · Granted May 22, 2001