Assignee
Inventors
- Yasuhiro Tsutsumi (18 patents)
- Yuji Yokoya (21 patents)
- Yoshimichi Hara (16 patents)
- Eiju Matsunaga (9 patents)
- Hiroyuki Kawata (88 patents)
- Akira Fukami (54 patents)
- Yutaka Suzuki (151 patents)
US Patent 5142477 · Granted Aug 25, 1992