Assignee
Inventors
- Takashi Koyama (3 patents)
- Kazuyo Watanabe (1 patents)
- Hiroshi Nojiri (5 patents)
- Sachio Naito (15 patents)
- Michitaka Sawada (10 patents)
- Genji Imokawa (29 patents)
- Hidehisa Takahashi (2 patents)
- Toshiki Kobayashi (3 patents)
US Patent 6123934 · Granted Sep 26, 2000