Assignee
Inventors
- Yasumasa Fukushima (7 patents)
- Masato Kumagai (34 patents)
- Kyoko Hamahara (12 patents)
- Toshihide Suzuki (58 patents)
- Koji Watanabe (255 patents)
- Hiroshi Nagaishi (5 patents)
- Fusao Togashi (12 patents)
US Patent 5993974 · Granted Nov 30, 1999