Assignee
Inventors
- Kazuya Arai (9 patents)
- Masakazu Umemura (7 patents)
- Hiroyuki Okamoto (67 patents)
- Takeshi Sakakibara (7 patents)
- Satoshi Ishikawa (156 patents)
- Hiraku Tanaka (18 patents)
- Kazuhito Sakai (28 patents)
US Patent 5735480 · Granted Apr 7, 1998