Assignee
Inventors
- Fumio Tsutsumi (21 patents)
- Mitsuhiko Sakakibara (28 patents)
- Noboru Shimada (6 patents)
- Yoshihisa Fujinaga (5 patents)
- Noboru Oshima (42 patents)
- Tatsuro Hamada (16 patents)
- Tatsuo Fujimaki (31 patents)
US Patent 4824908 · Granted Apr 25, 1989