Assignee
Inventors
- Tomio Sugimoto (4 patents)
- Masumi Itaya (2 patents)
- Yoshinao Hirano (5 patents)
- Hiroaki Harada (18 patents)
- Hachiro Hirano (20 patents)
- Sigeru Sakurai (2 patents)
- Makoto Yoshida (365 patents)
- Masaharu Tanaka (55 patents)
US Patent 6949226 · Granted Sep 27, 2005