Assignee
Inventors
- Takashi Hotta (81 patents)
- Yukio Morita (27 patents)
- Yoichi Kojima (26 patents)
- Kimihiko Kikuchi (7 patents)
- Tsunefumi Niiyama (20 patents)
- Yorinori Kumagai (15 patents)
- Hiroshi Nakayama (208 patents)
US Patent 5342257 · Granted Aug 30, 1994