Assignee
Inventors
- Shigeo Horino (15 patents)
- Hideo Omura (17 patents)
- Nobusato Maruyama (3 patents)
- Yoshiaki Ashikawa (3 patents)
- Masatoshi Shioya (2 patents)
- Toshiyuki Miyano (15 patents)
- Jiro Wakou (1 patents)
US Patent 5022531 · Granted Jun 11, 1991