Assignee
Inventors
- Akira Takase (26 patents)
- Hiroyuki Kai (59 patents)
- Moriyasu Masui (30 patents)
- Katuhisa Masumoto (6 patents)
- Akihiko Nakamura (119 patents)
- Yujiro Kiyoshima (6 patents)
- Mikio Sasaki (5 patents)
US Patent 5629442 · Granted May 13, 1997