Assignee
Inventors
- Nariaki Muto (8 patents)
- Keisuke Sumida (8 patents)
- Hiroaki Iwasaki (42 patents)
- Tsuneo Oki (5 patents)
- Eiichi Miyamoto (36 patents)
- Yasuyuki Hanatani (18 patents)
- Hiroaki Sakai (119 patents)
US Patent 5851712 · Granted Dec 22, 1998