Assignee
Inventors
- Akiya Izumi (9 patents)
- Iwao Takemoto (77 patents)
- Hiroichi Sokei (5 patents)
- Masahiko Kadowaki (3 patents)
- Atsumu Iguchi (6 patents)
- Junichiro Nakajima (1 patents)
- Masayuki Takahashi (194 patents)
- Kunio Niwa (25 patents)
US Patent 5274456 · Granted Dec 28, 1993