Assignee
Inventors
- Rempei Nakata (38 patents)
- Hisashi Kaneko (85 patents)
- Nobuo Hayasaka (71 patents)
- Takeshi Nishioka (24 patents)
- Yoshikuni Tateyama (22 patents)
- Yutaka Nakano (18 patents)
- Yasutaka Sasaki (40 patents)
US Patent 5664989 · Granted Sep 9, 1997