Assignee
Inventors
- Hirotaka Sakamaki (7 patents)
- Masayuki Ishikawa (194 patents)
- Hidetoshi Shimada (7 patents)
- Shizunori Mitsuma (2 patents)
- Hiroshi Zenisawa (2 patents)
- Kiyoshi Nagashima (4 patents)
- Noboru Takarasawa (3 patents)
US Patent 5457350 · Granted Oct 10, 1995