Assignee
Inventors
- Masashi Yoshida (81 patents)
- Hideki Ichikawa (23 patents)
- Kenichi Shibayama (4 patents)
- Yuujirou Kuwamura (1 patents)
- Masahiro Takada (66 patents)
- Koji Katahira (3 patents)
- Koji Shiga (8 patents)
US Patent 6026558 · Granted Feb 22, 2000