Assignee
Inventors
- Akio Namiki (9 patents)
- Yoshio Aoyagi (36 patents)
- Shigetoshi Kato (4 patents)
- Osamu Yoshizawa (6 patents)
- Hiroshi Wakimoto (4 patents)
- Akira Kawahara (18 patents)
- Takayuki Iijima (57 patents)
US Patent 5359230 · Granted Oct 25, 1994