Assignee
Inventors
- Akitoshi Toda (42 patents)
- Ryouhei Shimizu (5 patents)
- Hiroko Ohta (8 patents)
- Hiroshi Kajimura (24 patents)
- Yoshiyuki Mimura (27 patents)
- Yasuo Isono (13 patents)
- Toshihito Kouchi (15 patents)
US Patent 5144581 · Granted Sep 1, 1992