Assignee
Inventors
- Isamu Takekoshi (27 patents)
- Masahito Saegusa (8 patents)
- Mitsuru Ohnuma (17 patents)
- Atsushi Ninomiya (77 patents)
- Atsushi Katayama (37 patents)
- Shigeru Sato (148 patents)
- Tsuneo Maeda (11 patents)
US Patent 6218837 · Granted Apr 17, 2001