Assignee
Inventors
- Hiroaki Katayama (14 patents)
- Masaaki Nabika (18 patents)
- Akio Imai (51 patents)
- Akira Miyashita (56 patents)
- Tsuyoshi Watanabe (181 patents)
- Hirofumi Johohji (1 patents)
- Yoshiaki Oda (23 patents)
- Hidenori Hanaoka (25 patents)
US Patent 6329478 · Granted Dec 11, 2001