Assignee
Inventors
- Kazuyoshi Takahashi (90 patents)
- Makoto Katsuma (39 patents)
- Takashi Watanabe (622 patents)
- Hiroshi Endo (246 patents)
- Toshiyuki Yanaka (31 patents)
- Toshiaki Mabuchi (28 patents)
- Eiichi Takagi (18 patents)
US Patent 6031974 · Granted Feb 29, 2000