Assignee
Inventors
- Ryoichi Sato (44 patents)
- Hirofumi Kita (3 patents)
- Kouiti Matuo (1 patents)
- Masahiko Tsukamoto (3 patents)
- Ikuya Suwa (1 patents)
- Hideto Naraki (1 patents)
- Noriyuki Takao (10 patents)
- Hidetoshi Takano (6 patents)
US Patent 5640400 · Granted Jun 17, 1997