Assignee
Inventors
- Tomoyuki Ogura (15 patents)
- Yasuo Kawamura (28 patents)
- Shigeru Ishii (17 patents)
- Masatoshi Baba (23 patents)
- Masakazu Taniguchi (10 patents)
- Masayoshi Hirose (15 patents)
- Kiminori Hirata (12 patents)
- Yoshinori Ochiai (8 patents)
US Patent 4874861 · Granted Oct 17, 1989