Assignee
Inventors
- Shinichi Yoshida (143 patents)
- Eiji Ishikawa (26 patents)
- Akira Oshima (3 patents)
- Yasuo Bai (4 patents)
- Yasuteru Muragaki (2 patents)
- Kazushi Iwata (9 patents)
- Kenichi Obata (1 patents)
- Yasuo Nagai (28 patents)
US Patent 5137807 · Granted Aug 11, 1992