Assignee
Inventors
- Toshihiko Naito (15 patents)
- Katsura Hata (13 patents)
- Yumiko Kaku (3 patents)
- Akihiko Tsuruoka (21 patents)
- Itaru Tsukada (16 patents)
- Manabu Yanagisawa (3 patents)
- Toshio Toyosawa (4 patents)
- Kazumasa Nara (13 patents)
US Patent 5789429 · Granted Aug 4, 1998