Assignee
Inventors
- Ryooji Fukuyama (24 patents)
- Makoto Nawata (19 patents)
- Yutaka Kakehi (39 patents)
- Hironobu Kawahara (39 patents)
- Yoshiaki Sato (134 patents)
- Yoshimi Torii (18 patents)
- Akira Kawaraya (4 patents)
- Yoshie Sato (9 patents)
US Patent 6329298 · Granted Dec 11, 2001