Assignee
Inventors
- Ryuji Okamura (78 patents)
- Kazuyoshi Akiyama (40 patents)
- Hitoshi Murayama (29 patents)
- Koji Hitsuishi (7 patents)
- Satoshi Kojima (77 patents)
- Hirokazu Ohtoshi (22 patents)
- Masaaki Yamamura (28 patents)
US Patent 5817181 · Granted Oct 6, 1998