Assignee
Inventors
- Katsuya Yamagiwa (11 patents)
- Jun Otsuka (63 patents)
- Takashi KASASHIMA (10 patents)
- Manabu Sato (136 patents)
- Kazuhisa Itakura (7 patents)
- Takashi Oba (10 patents)
- Masahiko Matsumiya (2 patents)
US Patent 6720280 · Granted Apr 13, 2004