Assignee
Inventors
- Keisaku Ishihara (1 patents)
- Yoshinori Shirafuji (13 patents)
- Shin Sekiya (37 patents)
- Noboru Masuda (58 patents)
- Takeshi Izawa (6 patents)
- Hideto Nakao (7 patents)
- Makoto Tsukiji (7 patents)
- Shinsuke Miki (7 patents)
US Patent 6189322 · Granted Feb 20, 2001