Assignee
Inventors
- Tomonori Aoki (12 patents)
- Makoto Inoue (169 patents)
- Katsuji Ikeda (26 patents)
- Yoshihiro Hozumi (5 patents)
- Kazuya Hiratsuka (43 patents)
- Manabu Suhara (62 patents)
- Takeshi Kawasato (48 patents)
US Patent 6222720 · Granted Apr 24, 2001