Assignee
Inventors
- Tadakiyo Nakagawa (17 patents)
- Kazuyuki Sagi (16 patents)
- Kaoru Yoshida (4 patents)
- Yumiko Fukuda (6 patents)
- Masataka Shoji (9 patents)
- Shunji Takehana (7 patents)
- Takashi Kayahara (10 patents)
- Akira Takahara (10 patents)
US Patent 6812231 · Granted Nov 2, 2004