Assignee
Inventors
- Yoshimi Usui (6 patents)
- Junichi Suto (6 patents)
- Minoru Sugiyama (30 patents)
- Hidetoshi Isogai (1 patents)
- Munenori Tate (1 patents)
- Toshio Takaku (1 patents)
- Takashi Ichimura (28 patents)
- Toshio Izawa (4 patents)
US Patent 7641564 · Granted Jan 5, 2010