Assignee
Inventors
- Isao Yamatsu (76 patents)
- Takeshi Suzuki (63 patents)
- Shinya Abe (84 patents)
- Kouji Nakamoto (19 patents)
- Akiharu Kajiwara (22 patents)
- Manabu Murakami (22 patents)
- Kiyoshi Oketani (14 patents)
- Hideaki Fujisaki (15 patents)
US Patent 4888439 · Granted Dec 19, 1989