Assignee
Inventors
- Toshiaki Yamada (66 patents)
- Takeshi Takahashi (259 patents)
- Yoshiyuki Yasukawa (3 patents)
- Kenji Endou (20 patents)
- Shigeru Asami (12 patents)
- Michihisa Yamada (4 patents)
- Yasuo Moriya (20 patents)
US Patent 6500535 · Granted Dec 31, 2002