Assignee
Inventors
- Seiichi Susaki (16 patents)
- Katsuyuki Umezawa (13 patents)
- Tadashi Kaji (22 patents)
- Satoru Tezuka (28 patents)
- Ryoichi Sasaki (75 patents)
- Kuniaki Tabata (21 patents)
- Takashi Akaosugi (2 patents)
- Akira Kito (19 patents)
US Patent 6327658 · Granted Dec 4, 2001