Assignee
Inventors
- Kimio Tatsuno (49 patents)
- Kouji Yoshida (28 patents)
- Takeshi Kato (216 patents)
- Toshinori Hirataka (13 patents)
- Norihiro Yazaki (3 patents)
- Shoichi Takahashi (26 patents)
- Hiroshi Naka (23 patents)
US Patent 6668140 · Granted Dec 23, 2003