Assignee
Inventors
- Kiyomi Nagamiya (15 patents)
- Masashi Yamashita (72 patents)
- Iwao Maeda (23 patents)
- Masaaki Yamaoka (36 patents)
- Masayoshi Taki (10 patents)
- Satoshi Aoyama (63 patents)
- Yasushi Araki (70 patents)
US Patent 6332901 · Granted Dec 25, 2001