Assignee
Inventors
- Tsunao Magara (5 patents)
- Yoshiharu Tsuji (6 patents)
- Chika Hamada (3 patents)
- Yosuke Nakazawa (2 patents)
- Eriko Takeoka (6 patents)
- Masahiro Tajima (18 patents)
- Masazumi Watanabe (21 patents)
US Patent 5973000 · Granted Oct 26, 1999