Assignee
Inventors
- Yasuo Koga (8 patents)
- Yoshito Kihara (3 patents)
- Minoru Okada (53 patents)
- Takao Nishi (26 patents)
- Yoshihiro Inoue (4 patents)
- Yukio Kimura (1 patents)
- Hiroyoshi Hidaka (22 patents)
- Norio Fukuda (5 patents)
US Patent 6143763 · Granted Nov 7, 2000