Assignee
Inventors
- Yujiro Shimizu (4 patents)
- Masumi Nomura (27 patents)
- Shigeo Okamoto (12 patents)
- Yasuhiko Ikegami (3 patents)
- Isao Sagawa (4 patents)
- Tsutomu Sakagami (3 patents)
- Katsunori Tanaka (137 patents)
US Patent 6721631 · Granted Apr 13, 2004