Assignee
Inventors
- Eiichi Asayama (7 patents)
- Masataka Horai (7 patents)
- Shigeru Umeno (17 patents)
- Shinsuke Sadamitsu (11 patents)
- Yasuo Koike (26 patents)
- Kouji Sueoka (2 patents)
- Hisashi Katahama (1 patents)
US Patent 6641888 · Granted Nov 4, 2003