Assignee
Inventors
- Ryoichi Ando (14 patents)
- Naoko Ando (10 patents)
- Hirokazu Masuda (3 patents)
- Yasuhiro Morinaka (33 patents)
- Chizuko Takahashi (10 patents)
- Yoshikuni Tamao (17 patents)
- Akihiro Tobe (30 patents)
US Patent 5834508 · Granted Nov 10, 1998