Assignee
Inventors
- Kenji Togashi (6 patents)
- Morihiko Hamada (3 patents)
- Shigekazu Aoki (11 patents)
- Katsumi Shigenobu (3 patents)
- Yukio Saka (1 patents)
- Yoshikazu Arisaka (8 patents)
- Toyoji Sawada (14 patents)
- Tadashi Asai (2 patents)
US Patent 7171592 · Granted Jan 30, 2007