Assignee
Inventors
- Kazuhiko Yoshida (68 patents)
- Tatsuhiro Goto (19 patents)
- Akira Wakita (10 patents)
- Toshio Kawasaki (54 patents)
- Toyofumi Hasegawa (5 patents)
- Hideo Takeshita (2 patents)
- Toshiki Suwa (2 patents)
US Patent 5803993 · Granted Sep 8, 1998