Assignee
Inventors
- Minoru Tokizawa (20 patents)
- Hiromichi Eto (20 patents)
- Kazuya Ishida (42 patents)
- Kazunori Maebashi (15 patents)
- Masaru Matsumoto (30 patents)
- Takemitsu Asaoka (27 patents)
- Susumu Sato (56 patents)
US Patent 6528500 · Granted Mar 4, 2003