Assignee
Inventors
- Yoshifumi Aki (11 patents)
- Etuo Hasegawa (10 patents)
- Hiroki Matsuo (22 patents)
- Tetsuji Nobuta (13 patents)
- Michiyasu Yamamoto (28 patents)
- Mitsukawa Kazuhiro (1 patents)
- Eiji Okabayashi (24 patents)
US Patent 6397627 · Granted Jun 4, 2002