Assignee
Inventors
- Seiichiro Tanaka (6 patents)
- Takeshi Sawai (14 patents)
- Hiroshi Kobayashi (747 patents)
- Kenji Ooba (2 patents)
- Makiko Sekiguchi (1 patents)
- Nobuyuki Matsuzoe (5 patents)
- Haruo Katsumata (6 patents)
US Patent 6251981 · Granted Jun 26, 2001