Assignee
Inventors
- Hiroshi Fukuzawa (19 patents)
- Kohzaburoh Yamada (53 patents)
- Keiji Mihayashi (112 patents)
- Koji Tamoto (24 patents)
- Shigeru Shibayama (16 patents)
- Minoru Sato (150 patents)
- Kiyoshi Nakazyo (30 patents)
US Patent 5328818 · Granted Jul 12, 1994