Assignee
Inventors
- Masahiro Uematsu (18 patents)
- Tetsumi Harakawa (1 patents)
- Ryuichi Hiratsuka (4 patents)
- Kenji Ohmaru (2 patents)
- Shigeru Yamazaki (74 patents)
- Yasuhiro Ito (147 patents)
- Isao Nemoto (13 patents)
- Kazuro Kato (3 patents)
US Patent 5089824 · Granted Feb 18, 1992