Assignee
Inventors
- Norio Koike (48 patents)
- Toshifumi Ozaki (22 patents)
- Masaaki Nakai (143 patents)
- Haruhisa Ando (20 patents)
- Shinya Ohba (35 patents)
- Hideyuki Ono (57 patents)
- Hajime Akimoto (213 patents)
- Hajime Kinugasa (2 patents)
US Patent 4908684 · Granted Mar 13, 1990