Assignee
Inventors
- Shin Nishimura (32 patents)
- Akira Nagai (130 patents)
- Akio Takahashi (174 patents)
- Akio Mukoo (2 patents)
- Tadashi Narita (15 patents)
- Tokio Hagiwara (3 patents)
- Hiroshi Hamana (18 patents)
- Junichi Katagiri (18 patents)
US Patent 5308888 · Granted May 3, 1994