Assignee
Inventors
- Toshiyuki Takagi (41 patents)
- Hitoshi Chiyoma (12 patents)
- Naoki Akahori (2 patents)
- Yasuo Ebata (10 patents)
- Minoru Kawase (4 patents)
- Masayoshi Koshino (5 patents)
- Kaoru Sakinada (11 patents)
US Patent 6377138 · Granted Apr 23, 2002