Assignee
Inventors
- Kiyotada Narukawa (8 patents)
- Masakichi Shimada (4 patents)
- Noboru Yamamoto (94 patents)
- Taizo Yamaguchi (2 patents)
- Hiroyuki Wakabayashi (57 patents)
- Fumio Kato (73 patents)
- Tamotsu Matsubara (4 patents)
US Patent 4833181 · Granted May 23, 1989