Assignee
Inventors
- Youkou Saito (4 patents)
- Tadashi Utsunomiya (12 patents)
- Toshio Kumagai (131 patents)
- Hitoshi Matsumoto (197 patents)
- Masanori Takemura (11 patents)
- Kazuyuki Saito (75 patents)
- Yasushi Soya (4 patents)
US Patent 7824020 · Granted Nov 2, 2010