Assignee
Inventors
- Michio Ishida (14 patents)
- Tsutomu Kuwahara (2 patents)
- Hideo Sato (322 patents)
- Yoshitoshi Sekiguchi (13 patents)
- Kunio Sasaki (11 patents)
- Shiro Sakata (9 patents)
- Hiroshi Kosaka (8 patents)
- Toshio Hirai (41 patents)
US Patent 5586140 · Granted Dec 17, 1996