Assignee
Inventors
- Hiroyuki Hirano (133 patents)
- Shinichirou Kitada (3 patents)
- Toshio Kikuchi (36 patents)
- Eiji Inada (9 patents)
- Ryuichi Idoguchi (6 patents)
- Takeshi Asou (2 patents)
- Yutarou Kaneko (1 patents)
US Patent 6137250 · Granted Oct 24, 2000