Assignee
Inventors
- Shigeto Ohmori (37 patents)
- Takehiro Katoh (43 patents)
- Yasuo Maeda (29 patents)
- Tetsuo Yamada (128 patents)
- Masayasu Hirano (26 patents)
- Naohiro Kageyama (23 patents)
- Hiroko Ono (3 patents)
US Patent 6141499 · Granted Oct 31, 2000