Assignee
Inventors
- Tsukasa Toyooka (26 patents)
- Toichi Hirata (91 patents)
- Genroku Sugiyama (94 patents)
- Shigehiro Yoshinaga (7 patents)
- Kouji Ishikawa (146 patents)
- Youichi Kowatari (11 patents)
- Tsuyoshi Nakamura (204 patents)
US Patent 5813311 · Granted Sep 29, 1998