Assignee
Inventors
- Masaaki Yasukawa (4 patents)
- Tadashi Kinebuchi (23 patents)
- Noriko Watanabe (78 patents)
- Kunio Yoneno (28 patents)
- Syoichi Uchiyama (2 patents)
- Hiroshi Kamakura (18 patents)
- Joji Karasawa (22 patents)
US Patent 6320559 · Granted Nov 20, 2001