Assignee
Inventors
- Yasuji Yamauchi (8 patents)
- Toshio Yamanaka (68 patents)
- Masafumi Okumura (17 patents)
- Masashi Hirai (37 patents)
- Kyousuke Taka (3 patents)
- Kinji Uno (3 patents)
- Yoshiharu Yoneda (21 patents)
- Hirokazu Yamauchi (41 patents)
US Patent 6014920 · Granted Jan 18, 2000