Assignee
Inventors
- Tokuji Sato (22 patents)
- Hisashi Hamada (28 patents)
- Shiro Hashimoto (13 patents)
- Shigenori Goto (32 patents)
- Tatsuo Saito (50 patents)
- Hiroyuki Arai (110 patents)
- Akio Omiya (28 patents)
- Makoto Akiba (14 patents)
US Patent 6208812 · Granted Mar 27, 2001