Assignee
Inventors
- Yuzuru Tsurumi (3 patents)
- Shigeru Okamura (33 patents)
- Hiroyuki Ishii (377 patents)
- Takeshi Niimura (20 patents)
- Ryuichi Kojima (26 patents)
- Masahide Tanoue (8 patents)
- Akira Yuza (15 patents)
US Patent 6070867 · Granted Jun 6, 2000