Assignee
Inventors
- Motokazu Yamada (133 patents)
- Hideyuki Hayakawa (20 patents)
- Tomonori Fukui (11 patents)
- Hajime Matsuhashi (11 patents)
- Yasuhiro Kaneko (15 patents)
- Motozo Ikeda (4 patents)
- Tomihiko Nagata (3 patents)
US Patent 4812845 · Granted Mar 14, 1989