Assignee
Inventors
- Toshiaki Yamada (66 patents)
- Hiroaki Hasegawa (57 patents)
- Yoshiyuki Yasukawa (3 patents)
- Kenji Endou (20 patents)
- Michihisa Yamada (4 patents)
- Yasuo Moriya (20 patents)
- Tomiho Yamada (4 patents)
- Tetsuya Itoh (38 patents)
US Patent 6420476 · Granted Jul 16, 2002