Assignee
Inventors
- Seijun Higuchi (11 patents)
- Kenichi Asakawa (26 patents)
- Takayuki Ohmori (12 patents)
- Koji Umeno (7 patents)
- Nobuyoshi Okada (9 patents)
- Minoru Fujinaga (4 patents)
- Fumio Yamamoto (27 patents)
- Katsuhiko Yabe (1 patents)
US Patent 4891274 · Granted Jan 2, 1990