Assignee
Inventors
- Ryuichi Hattori (33 patents)
- Toshihiko Ogura (152 patents)
- Takashi Oeda (111 patents)
- Koichi Okazawa (55 patents)
- Hideki Osaka (58 patents)
- Tsunehiro Tobita (27 patents)
- Tsutomu Hara (65 patents)
US Patent 6519640 · Granted Feb 11, 2003