Assignee
Inventors
- Shigekazu Minechika (11 patents)
- Kazuyuki Okamoto (9 patents)
- Osami Sunagawa (2 patents)
- Masahiko Nishikawa (26 patents)
- Takashi Ohnaka (3 patents)
- Hirotsugu Murashima (17 patents)
- Tatsuo Tanaka (74 patents)
US Patent 6014494 · Granted Jan 11, 2000