Assignee
Inventors
- Naoki Niwa (7 patents)
- Takuji Kobori (15 patents)
- Motoichi Takahashi (5 patents)
- Narito Kurata (3 patents)
- Takayuki Mizuno (69 patents)
- Masatoshi Ishida (4 patents)
- Tomohiko Hatada (1 patents)
US Patent 5491938 · Granted Feb 20, 1996