Assignee
Inventors
- Shunji Maeda (170 patents)
- Kenji Oka (70 patents)
- Hiroshi Makihira (18 patents)
- Yasuhiko Nakayama (29 patents)
- Minoru Yoshida (343 patents)
- Yukihiro Shibata (93 patents)
- Chie Shishido (82 patents)
US Patent 6674890 · Granted Jan 6, 2004