Assignee
Inventors
- Kenji Ohashi (24 patents)
- Tatsuya Ishizaki (29 patents)
- Masayuki Umeno (4 patents)
- Eiichi Asano (26 patents)
- Shoichi Osada (29 patents)
- Kazutoshi Tomiyoshi (48 patents)
- Toshio Shiobara (189 patents)
US Patent 6168872 · Granted Jan 2, 2001