Assignee
Inventors
- Toshimitsu Araki (17 patents)
- Fumihiko Kawamata (4 patents)
- Masayuki Ogino (9 patents)
- Hitoshi Miyagawa (6 patents)
- Toshio Kamata (4 patents)
- Mitsuo Watanabe (110 patents)
- Kunihiro Miyashita (2 patents)
US Patent 4974779 · Granted Dec 4, 1990