Assignee
Inventors
- Kyoichi Kagawa (7 patents)
- Chizuko Fukuhama (6 patents)
- Hisako Matsutaka (3 patents)
- Toru Iguchi (1 patents)
- Toyoo Nakamura (5 patents)
- Masahiro Numata (6 patents)
- Shigeaki Watanabe (4 patents)
US Patent 5756467 · Granted May 26, 1998