Assignee
Inventors
- Noboru Koyama (43 patents)
- Yasushi Nakano (123 patents)
- Yoshitaka Yasufuku (17 patents)
- Setsuko Kawahara (16 patents)
- Takemasa Namiki (11 patents)
- Shigetoshi Kawabe (13 patents)
- Masahiro Umemura (7 patents)
US Patent 5035856 · Granted Jul 30, 1991