Assignee
Inventors
- Mitsugu Takezaki (11 patents)
- Yoshio Fukushima (18 patents)
- Noboru Ishikawa (18 patents)
- Takeo Fujiyama (13 patents)
- Hiroshi Tanaka (842 patents)
- Kazuhiko Kuraguchi (3 patents)
- Shinobu Iino (1 patents)
US Patent 5921156 · Granted Jul 13, 1999