Assignee
Inventors
- Norio Hirayama (15 patents)
- Mitsuo Osada (16 patents)
- Akira Ichida (8 patents)
- Yoshinari Amano (14 patents)
- Kiyoshi Asai (71 patents)
- Hidetoshi Maesato (5 patents)
- Tadashi Arikawa (9 patents)
- Kenji Sakimae (2 patents)
US Patent 6693353 · Granted Feb 17, 2004