Assignee
Inventors
- Koji Sugiyama (38 patents)
- Hiroshi Taira (112 patents)
- Minoru Yamamoto (109 patents)
- Keiji Seo (64 patents)
- Takashi Okumura (33 patents)
- Katsuhiko Shimada (30 patents)
- Mutsuo Naoe (1 patents)
US Patent 7726646 · Granted Jun 1, 2010