Assignee
Inventors
- Ikuhiro Mishima (11 patents)
- Norito Doi (5 patents)
- Youichi Matsumura (10 patents)
- Shigemi Matsumoto (13 patents)
- Shinobu Ochikoshi (4 patents)
- Kazuhito Wada (11 patents)
- Hiroki Yoshino (32 patents)
US Patent 6136918 · Granted Oct 24, 2000