Assignee
Inventors
- Seiichi Saito (14 patents)
- Akira Masuda (8 patents)
- Masayuki Kitagawa (26 patents)
- Nobuyoshi Shimada (16 patents)
- Jun-ichi Seki (4 patents)
- Hiroo Hoshino (13 patents)
- Yukihiro Nishiyama (7 patents)
US Patent 5283331 · Granted Feb 1, 1994