Assignee
Inventors
- Hideki Maruyama (20 patents)
- Kenmei Masuda (23 patents)
- Kuniaki Hirayama (7 patents)
- Yoshio Uemura (3 patents)
- Toshihiko Imachi (3 patents)
- Kenkichi Inada (10 patents)
- Toshio Tsuchiya (30 patents)
US Patent 6108165 · Granted Aug 22, 2000