Assignee
Inventors
- Seiichiro Kawashima (11 patents)
- Sumio Terada (3 patents)
- Kenichi Saito (15 patents)
- Toshiaki Suzuki (211 patents)
- Hiroya Sasahara (4 patents)
- Toshihisa Kanda (1 patents)
- Tsuneo Inoue (5 patents)
US Patent 6057447 · Granted May 2, 2000