Assignee
Inventors
- Tomoyuki Kusaba (10 patents)
- Kazue Shinsugi (2 patents)
- Tsuguhiro Katoh (10 patents)
- Naoto Meki (10 patents)
- Masayo Sugano (13 patents)
- Tomohiro Teramae (8 patents)
- Yukio Oguri (15 patents)
- Tamon Uematsu (11 patents)
US Patent 4918089 · Granted Apr 17, 1990