Assignee
Inventors
- Kazuo Doyama (9 patents)
- Makoto Yamaguchi (62 patents)
- Makoto Ohsuga (4 patents)
- Akihiro Niki (8 patents)
- Toranosuke Saito (29 patents)
- Hiroki Tsunomachi (7 patents)
- Daishiro Kishimoto (8 patents)
US Patent 5236988 · Granted Aug 17, 1993