Assignee
Inventors
- Tomoyuki Shirasaki (51 patents)
- Hiroyasu Yamada (33 patents)
- Masaharu Shioya (23 patents)
- Tetsushi Yoshida (51 patents)
- Manabu Takei (72 patents)
- Tetsuo Muto (7 patents)
- Yasuhiro Daiku (24 patents)
US Patent 6025894 · Granted Feb 15, 2000