Assignee
Inventors
- Tadakatsu Mandai (10 patents)
- Hiroshi Okumoto (6 patents)
- Koji Hara (20 patents)
- Katsuhiko Mikuni (11 patents)
- Kozo Hara (15 patents)
- Yoshinori Tsuchiya (1 patents)
- Kosho Nakamura (1 patents)
- Teruhiko Umetsu (2 patents)
US Patent 6306893 · Granted Oct 23, 2001