Assignee
Inventors
- Michiya Okamura (10 patents)
- Hiroshi Yui (18 patents)
- Takeshi Hatakeyama (65 patents)
- Michio Ohmori (5 patents)
- Kouich Sagisaka (1 patents)
- Kazuyuki Hata (10 patents)
- Katsuhiko Yamada (81 patents)
- Kazuhide Hayama (35 patents)
US Patent 5153247 · Granted Oct 6, 1992