Assignee
Inventors
- Masami Ikeda (215 patents)
- Hiroshi Sugitani (118 patents)
- Shigeyuki Matsumoto (58 patents)
- Yasuhiro Naruse (8 patents)
- Kenji Makino (79 patents)
- Masaaki Izumida (41 patents)
- Seiichi Tamura (26 patents)
US Patent 6375312 · Granted Apr 23, 2002