Assignee
Inventors
- Chikara Sato (59 patents)
- Masakazu Hiroi (51 patents)
- Akimaro Yoshida (24 patents)
- Katsuya Yamazaki (13 patents)
- Yasuo Fukazu (25 patents)
- Tomohito Nakagawa (37 patents)
- Takayuki Fujii (134 patents)
- Yuzoh Matsumoto (7 patents)
US Patent 6021305 · Granted Feb 1, 2000