Assignee
Inventors
- Kiyoshi Ono (14 patents)
- Yasuo Sakurai (51 patents)
- Yoshio Kishimoto (49 patents)
- Hiroyasu Miyasaka (4 patents)
- Yasuaki Kitazaki (8 patents)
- Tetsuaki Matsuda (3 patents)
- Junichi Kobayashi (136 patents)
US Patent 4822670 · Granted Apr 18, 1989