Assignee
Inventors
- Naomune Moriyama (13 patents)
- Takahito Yokouchi (6 patents)
- Reiji Kikuchi (11 patents)
- Koichi Yamamoto (188 patents)
- Hideaki Akaboshi (1 patents)
- Ayumu Doi (18 patents)
- Masaki Kadokura (4 patents)
US Patent 5143167 · Granted Sep 1, 1992