Assignee
Inventors
- Kazumasa Hirayama (8 patents)
- Hitoshi Takeda (185 patents)
- Hisashi Iijima (3 patents)
- Takeo Ito (58 patents)
- Sakae Kimura (12 patents)
- Hisashi Chigusa (16 patents)
- Yoshimitsu Aramaki (5 patents)
US Patent 6325901 · Granted Dec 4, 2001