Assignee
Inventors
- Keiji Ishibashi (73 patents)
- Masahiko Tanaka (67 patents)
- Minoru Karasawa (5 patents)
- Hideki Sunayama (7 patents)
- Kazutaka Yamada (49 patents)
- Hideki Matsumura (22 patents)
- Atsushi Masuda (51 patents)
US Patent 7211152 · Granted May 1, 2007