Assignee
Inventors
- Yukihiro Hamada (10 patents)
- Kazuo Ishihara (14 patents)
- Toshihiko Masumoto (2 patents)
- Tsuyoshi Fujita (36 patents)
- Katsutoshi Masatomi (1 patents)
- Yoshihisa Takeda (2 patents)
- Masayuki Kawashima (12 patents)
US Patent 6023707 · Granted Feb 8, 2000