Assignee
Inventors
- Hiroaki Terada (21 patents)
- Katsuhiko Asada (15 patents)
- Hiroaki Nishikawa (27 patents)
- Shuji Hara (8 patents)
- Mitsuo Meichi (4 patents)
- Toshiya Okamoto (42 patents)
- Hajime Asano (13 patents)
US Patent 4775950 · Granted Oct 4, 1988