Assignee
Inventors
- Toshiyuki Sakamoto (13 patents)
- Ikuya Arai (55 patents)
- Toshiyuki Kurita (41 patents)
- Toshinori Murata (33 patents)
- Isao Nakagawa (42 patents)
- Masahiko Achiha (14 patents)
- Kazuo Ishikura (17 patents)
US Patent 4821112 · Granted Apr 11, 1989