Assignee
Inventors
- Rei Hasegawa (67 patents)
- Tatsuo Saishu (60 patents)
- Akira Kinno (38 patents)
- Kohki Takatoh (21 patents)
- Hiroyuki Nagata (21 patents)
- Rieko Iida (4 patents)
- Haruhiko Okumura (78 patents)
- Hisao Fujiwara (24 patents)
US Patent 6219019 · Granted Apr 17, 2001