Assignee
Inventors
- Hitoshi Arai (13 patents)
- Yutaka Kanda (65 patents)
- Hiroyuki Yamaguchi (4 patents)
- Tadashi Ashizawa (33 patents)
- Chikara Murakata (41 patents)
- Shun-ichi Ikeda (10 patents)
- Tatsuya Tamaoki (21 patents)
US Patent 5981558 · Granted Nov 9, 1999