Assignee
Inventors
- Tomoyasu Yamada (38 patents)
- Tetsuro Nagao (1 patents)
- Nobutoshi Fukuda (5 patents)
- Masashi Tanabe (13 patents)
- Yoshiki Furuta (8 patents)
- Shinichi Yamamisaka (3 patents)
- Naoto Arifuku (6 patents)
US Patent 4992892 · Granted Feb 12, 1991