Assignee
Inventors
- Minoru Ishikawa (4 patents)
- Shoichi Murakami (6 patents)
- Mikio Yamamoto (6 patents)
- Dai Kubota (6 patents)
- Mitsugu Hachisu (15 patents)
- Kiyoaki Katano (24 patents)
- Keiichi Ajito (17 patents)
US Patent 6420558 · Granted Jul 16, 2002