Assignee
Inventors
- Koichi Kawasumi (11 patents)
- Takeshi Yamasaki (57 patents)
- Eriko Matsui (68 patents)
- Akio Yasuda (118 patents)
- Yuji Shiina (1 patents)
- Tadashi Kiyomiya (10 patents)
- Yoshihiro Yamaguchi (257 patents)
US Patent 5978065 · Granted Nov 2, 1999