Assignee
Inventors
- Masahiro Isobe (12 patents)
- Kazuhiko Ohkubo (9 patents)
- Seijiro Sakai (5 patents)
- Usaji Takaki (29 patents)
- Tadahito Nobori (31 patents)
- Tsukuru Izukawa (17 patents)
- Satoshi Yamasaki (93 patents)
US Patent 6063825 · Granted May 16, 2000