Assignee
Inventors
- Nobuo Ichimura (15 patents)
- Mitsuo Yamazaki (36 patents)
- Kohei Fujita (14 patents)
- Hidetaka Satou (7 patents)
- Yasuo Miyamoto (36 patents)
- Masao Kawasumi (4 patents)
- Tohru Kikuchi (19 patents)
US Patent 5258139 · Granted Nov 2, 1993