Assignee
Inventors
- Yasuyuki Ishii (71 patents)
- Toshimitsu Hirakue (4 patents)
- Shigeru Yoshimura (32 patents)
- Kenji Kurita (40 patents)
- Masakazu Ozawa (24 patents)
- Masanori Morita (12 patents)
- Hiroaki Noaki (3 patents)
- Eiichi Motai (7 patents)
US Patent 5660489 · Granted Aug 26, 1997