Assignee
Inventors
- Shinichiro Aoki (15 patents)
- Koichi Kawata (12 patents)
- Yasuyuki Morita (39 patents)
- Akitoshi Mori (8 patents)
- Yuji Hashidate (3 patents)
- Tatsuki Tsukada (5 patents)
- Hiroshi Nakamura (723 patents)
US Patent 4890899 · Granted Jan 2, 1990