Assignee
Inventors
- Tateki Oka (59 patents)
- Naoki Toyoshi (25 patents)
- Tomoaki Yokoyama (27 patents)
- Hiroshi Mizuno (221 patents)
- Hiroshi Murasaki (27 patents)
- Akihito Ikegawa (59 patents)
- Kouichi Etou (23 patents)
- Shuichi Nakagawa (67 patents)
US Patent 5012285 · Granted Apr 30, 1991