Assignee
Inventors
- Hiroshi Akamatsu (59 patents)
- Yukinori Kawamura (21 patents)
- Hiroshi Kai (18 patents)
- Osamu Kuramoto (1 patents)
- Shigeru Iwasaki (2 patents)
- Kenji Asai (25 patents)
- Minoru Hibino (2 patents)
US Patent 7293692 · Granted Nov 13, 2007