Assignee
Inventors
- Hiroshi Echizen (28 patents)
- Yasushi Fujioka (59 patents)
- Katsumi Nakagawa (152 patents)
- Masahiro Kanai (191 patents)
- Toshimitsu Kariya (37 patents)
- Jinsho Matsuyama (36 patents)
- Tetsuya Takei (45 patents)
US Patent 5114770 · Granted May 19, 1992