Assignee
Inventors
- Minoru Niigaki (37 patents)
- Katsuyuki Kinoshita (28 patents)
- Toru Hirohata (42 patents)
- Tuneo Ihara (5 patents)
- Masami Yamada (12 patents)
- Norio Asakura (10 patents)
- Yasuharu Negi (11 patents)
- Tomoko Suzuki (72 patents)
US Patent 5471051 · Granted Nov 28, 1995