Assignee
Inventors
- Tomoki Izawa (5 patents)
- Katsunari Shiroyama (3 patents)
- Ryosaku Akimoto (9 patents)
- Tatsuhide Kawahara (8 patents)
- Shinji Banno (1 patents)
- Sadahiko Tanaka (10 patents)
- Unknown
- Shigeharu Ishii (6 patents)
US Patent 6029739 · Granted Feb 29, 2000