Assignee
Inventors
- Norio Kawamura (21 patents)
- Hiroshi Murashita (4 patents)
- Junich Hamamoto (2 patents)
- Takashi Masuda (156 patents)
- Toshimi Nakashima (3 patents)
- Kazuhiko Hiraguchi (3 patents)
- Kenji Takahashi (603 patents)
US Patent 6824723 · Granted Nov 30, 2004