Assignee
Inventors
- Mitsuo Hitomi (64 patents)
- Shunji Masuda (27 patents)
- Toshihiko Hattori (23 patents)
- Kenji Kashiyama (15 patents)
- Junsou Sasaki (28 patents)
- Noriyuki Iwata (42 patents)
- Naoyuki Yamagata (21 patents)
US Patent 5309886 · Granted May 10, 1994