Assignee
Inventors
- Akiyoshi Furukawa (2 patents)
- Takao Nishida (59 patents)
- Atsushi Kamachi (9 patents)
- Michio Suzuki (92 patents)
- Kazushi Ogiyama (1 patents)
- Yoshiharu Hagiwara (1 patents)
- Kenji Fukuda (116 patents)
US Patent 5632238 · Granted May 27, 1997