Assignee
Inventors
- Kiyoshi Taniguchi (13 patents)
- Minoru Sakurai (13 patents)
- Norio Hashimoto (7 patents)
- Takumi Okamoto (1 patents)
- Kazunori Tsubaki (11 patents)
- Yasuyo Tomishima (6 patents)
- Hisashi Takasugi (135 patents)
US Patent 6391915 · Granted May 21, 2002