Assignee
Inventors
- Shigeki Oshiyama (1 patents)
- Koji Kishimoto (25 patents)
- Takeshi Hirota (6 patents)
- Shigetoshi Suzue (7 patents)
- Hiroyoshi Hiramatsu (6 patents)
- Kiyoaki Yoshikawa (4 patents)
- Nobuyuki Suzuki (295 patents)
US Patent 4789381 · Granted Dec 6, 1988