Assignee
Inventors
- Katsuaki Hirai (26 patents)
- Noriyoshi Ueda (37 patents)
- Yoshifumi Takehara (25 patents)
- Masaaki Sato (362 patents)
- Katsuhito Kato (28 patents)
- Naho Saitoh (5 patents)
- Kenichi Hayashi (216 patents)
US Patent 5897250 · Granted Apr 27, 1999