Assignee
Inventors
- Shoichi Sugiyama (3 patents)
- Fumiaki Arai (17 patents)
- Masayasu Nonogaki (27 patents)
- Yuji Natori (19 patents)
- Hideyuki Yamaguchi (26 patents)
- Hitoshi Ueda (25 patents)
- Hiroshi Tomita (247 patents)
- Kotaro Kato (10 patents)
US Patent 5188881 · Granted Feb 23, 1993