Assignee
Inventors
- Koichi Fujiwara (36 patents)
- Hiroko Mizutani (3 patents)
- Hiromichi Mizutani, deceased (6 patents)
- Shuichi Shibata (10 patents)
- Koichi Arishima (17 patents)
- Mitsutoshi Hoshino (5 patents)
- Yasushi Hoshino (33 patents)
US Patent 5238811 · Granted Aug 24, 1993