Assignee
Inventors
- Daisuke Makino (48 patents)
- Hisayoshi Ohta (2 patents)
- Keigo Mizutani (30 patents)
- Masataka Naito (37 patents)
- Masanori Yamada (119 patents)
- Masahiro Shibata (123 patents)
- Hiromi Sano (45 patents)
US Patent 5676811 · Granted Oct 14, 1997