Assignee
Inventors
- Sadao Kawahara (19 patents)
- Michio Yamamura (31 patents)
- Jiro Yuda (7 patents)
- Yoshinori Kojima (29 patents)
- Shuichi Yamamoto (43 patents)
- Manabu Sakai (39 patents)
- Shigeru Muramatsu (131 patents)
- Osamu Aiba (26 patents)
US Patent 5217359 · Granted Jun 8, 1993