Assignee
Inventors
- Kazuo Iguchi (19 patents)
- Tetsuo Soejima (17 patents)
- Kazuo Murano (11 patents)
- Shigeo Amemiya (16 patents)
- Hiroaki Komine (26 patents)
- Toshiaki Watanabe (282 patents)
- Tomohiro Shinomiya (15 patents)
US Patent 4920546 · Granted Apr 24, 1990