Assignee
Inventors
- Yoshinori Katayama (30 patents)
- Terukiyo Murakami (14 patents)
- Hiroyuki Asano (68 patents)
- Yuichi Abe (103 patents)
- Haruhiko Iizuka (43 patents)
- Kazuaki Shimizu (12 patents)
- Yoshio Fukai (4 patents)
US Patent 5091857 · Granted Feb 25, 1992