Assignee
Inventors
- Seiji Kuramoto (13 patents)
- Ryoji Masubuchi (6 patents)
- Akio Nakada (32 patents)
- Yasuhiko Omagari (5 patents)
- Ichiro Nakamura (74 patents)
- Nobuhiko Washizuka (6 patents)
- Yoshinao Oaki (24 patents)
US Patent 5630795 · Granted May 20, 1997