Assignee
Inventors
- Katsutoshi Aoki (31 patents)
- Masayuki Maruta (32 patents)
- Yukiya Sato (16 patents)
- Hisakazu Tajima (11 patents)
- Takehiko Tohjo (7 patents)
- Yasunori Inagaki (19 patents)
- Shingo Tanaka (85 patents)
US Patent 6121408 · Granted Sep 19, 2000