Assignee
Inventors
- Shinichi Yamagata (9 patents)
- Yugaku Abe (13 patents)
- Makoto Imamura (50 patents)
- Akira Fukui (38 patents)
- Yoshishige Takano (30 patents)
- Takatoshi Takikawa (12 patents)
- Yoshiyuki Hirose (22 patents)
US Patent 6183874 · Granted Feb 6, 2001