Assignee
Inventors
- Yoshinobu Kawasaki (7 patents)
- Shigehiro Nakajima (1 patents)
- Yoshimasa Ota (2 patents)
- Koichi Kida (1 patents)
- Noriyuki Unose (4 patents)
- Yasuo Watanabe (98 patents)
- Mitsugu Takahashi (23 patents)
- Makoto Urano (4 patents)
US Patent 6061887 · Granted May 16, 2000