Assignee
Inventors
- Kenichi Doi (4 patents)
- Shintaro Yamaoka (1 patents)
- Yoshitake Nagayama (1 patents)
- Masanori Fujiki (1 patents)
- Shinichi Goto (1 patents)
- Katsuhiro Ohsaki (1 patents)
- Takeya Sakai (11 patents)
US Patent 5244495 · Granted Sep 14, 1993