Assignee
Inventors
- Shunji Sunaga (8 patents)
- Shoichi Koganei (4 patents)
- Masaru Akiba (57 patents)
- Tomoyoshi Tsurufuji (28 patents)
- Yutaka Kurano (2 patents)
- Toyoaki Takimoto (2 patents)
- Toshihiro Kurokawa (2 patents)
US Patent 6543178 · Granted Apr 8, 2003