Assignee
Inventors
- Yoshihiro Sawada (33 patents)
- Akira Hashimoto (272 patents)
- Tetsuya Osaka (37 patents)
- Ichiro Koiwa (15 patents)
- Juro Mita (15 patents)
- Yoshinori Maeno (29 patents)
- Yukihisa Okada (9 patents)
- Hiroyo Kato (9 patents)
US Patent 6120912 · Granted Sep 19, 2000