Assignee
Inventors
- Ken-ichiro Miyagawa (3 patents)
- Shigetoshi Tsubotani (8 patents)
- Masafumi Nakao (12 patents)
- Yoshitaka Nakano (1 patents)
- Keiji Kamiyama (19 patents)
- Motoo Izawa (2 patents)
- Yohko Akiyama (18 patents)
- Yuji Nishikimi (2 patents)
US Patent 6423869 · Granted Jul 23, 2002