Assignee
Inventors
- Kazuto Sakai (33 patents)
- Masanori Arata (30 patents)
- Mikio Takabatake (8 patents)
- Yoshio Hashidate (5 patents)
- Ryoichi Kurosawa (29 patents)
- Yosuke Nakazawa (33 patents)
- Tadashi Tokumasu (34 patents)
US Patent 6552462 · Granted Apr 22, 2003