Assignee
Inventors
- Hideo Sugiyama (11 patents)
- Masato Sugimachi (9 patents)
- Minoru Ishiharada (22 patents)
- Yasuhiro Morimura (36 patents)
- Tatsuo Terahama (5 patents)
- Hiroshi Fukuyama (18 patents)
- Itsuo Tanuma (43 patents)
US Patent 5982969 · Granted Nov 9, 1999