Assignee
Inventors
- Masaaki Matsuo (38 patents)
- Kazuo Okumura (21 patents)
- Shinji Shigenaga (13 patents)
- Hiroaki Nishimura (2 patents)
- Hiroshi Matsuda (21 patents)
- Daijiro Hagiwara (18 patents)
- Tadashi Terasaka (12 patents)
US Patent 5994378 · Granted Nov 30, 1999