Assignee
Inventors
- Junichi Tamaoki (22 patents)
- Tetsuya Yamada (137 patents)
- Sanji Inagaki (13 patents)
- Kesaaki Kitazawa (4 patents)
- Naotaka Nishikawa (4 patents)
- Youichi Ishikawa (14 patents)
- Kenji Takahashi (603 patents)
US Patent 4757347 · Granted Jul 12, 1988