Assignee
Inventors
- Fumihiko Andoh (3 patents)
- Kazuhisa Taketoshi (12 patents)
- Katsu Tanaka (3 patents)
- Masao Yamawaki (16 patents)
- Hidekazu Yamamoto (27 patents)
- Hiroshi Kawashima (147 patents)
- Naofumi Murata (24 patents)
US Patent 5539461 · Granted Jul 23, 1996