Assignee
Inventors
- Shigeto Negi (38 patents)
- Motosuke Yamanaka (25 patents)
- Kanemasa Katsu (14 patents)
- Isao Sugiyama (24 patents)
- Yuuki Komatu (13 patents)
- Atsushi Kamata (6 patents)
- Akihiko Tsuruoka (21 patents)
- Yoshimasa Machida (42 patents)
US Patent 5741902 · Granted Apr 21, 1998