Assignee
Inventors
- Takashi Ishigami (64 patents)
- Minoru Obata (13 patents)
- Mituo Kawai (27 patents)
- Michio Satou (14 patents)
- Takashi Yamanobe (20 patents)
- Toshihiro Maki (26 patents)
- Noriaki Yagi (49 patents)
- Shigeru Ando (50 patents)
US Patent 5679983 · Granted Oct 21, 1997