Assignee
Inventors
- Sadao Nada (6 patents)
- Daiichiro Kawashima (26 patents)
- Tetsuya Miyano (4 patents)
- Koichi Ogiso (11 patents)
- Yasuo Shibuya (13 patents)
- Takehiko Shiraki (4 patents)
- Moriyoshi Takagi (2 patents)
US Patent 6681543 · Granted Jan 27, 2004