Assignee
Inventors
- Koichi Kojima (20 patents)
- Junichi Sakai (6 patents)
- Yuichi Aizawa (5 patents)
- Naozumi Samata (3 patents)
- Masao Kozuka (5 patents)
- Kenji Yoshimi (7 patents)
- Isao Kaneko (28 patents)
- Kazuo Koyama (13 patents)
US Patent 5965591 · Granted Oct 12, 1999