Assignee
Inventors
- Tadayuki Sakakibara (13 patents)
- Teruo Tanaka (45 patents)
- Katsuyoshi Kitai (26 patents)
- Tadaaki Isobe (22 patents)
- Shigeko Hashimoto (4 patents)
- Yasuhiro Inagami (31 patents)
- Yoshiko Tamaki (20 patents)
US Patent 5617575 · Granted Apr 1, 1997