Assignee
Inventors
- Eiichi Ishii (24 patents)
- Takumi Sone (2 patents)
- Yukihiro Sato (61 patents)
- Kei Demizu (2 patents)
- Hideo Kakutani (1 patents)
- Koichi Tanaka (358 patents)
- Shinichi Tanaka (267 patents)
- Noriyoshi Tsuji (3 patents)
US Patent 7291229 · Granted Nov 6, 2007