Assignee
Inventors
- Masanori Nishibata (1 patents)
- Nobuyuki Wada (29 patents)
- Hideto YOSHIZUKA (1 patents)
- Keiji Ueno (21 patents)
- Kazuo Nakata (19 patents)
- Masayasu Nakaoka (1 patents)
- Takumi Shigeno (1 patents)
US Patent 6149321 · Granted Nov 21, 2000