Assignee
Inventors
- Noboru Shimada (6 patents)
- Iwakazu Hattori (32 patents)
- Mitsuhiko Sakakibara (28 patents)
- Noboru Oshima (42 patents)
- Tatsuro Hamada (16 patents)
- Hiromi Fukuoka (10 patents)
- Tatsuo Fujimaki (31 patents)
US Patent 4894409 · Granted Jan 16, 1990