Assignee
Inventors
- Atsushi Takano (64 patents)
- Masayuki Iijima (72 patents)
- Kazuo Umeda (21 patents)
- Kazuo Takahashi (213 patents)
- Osamu Sasaki (81 patents)
- Hitoshi Fujii (41 patents)
- Mitsuru Takeda (19 patents)
- Masaaki Asano (31 patents)
US Patent 5297132 · Granted Mar 22, 1994