Assignee
Inventors
- Atsuo Hamada (9 patents)
- Kazumasa Kamatani (8 patents)
- Kazuyoshi Yoshimi (10 patents)
- Atsushi Okuda (63 patents)
- Souji Sakata (5 patents)
- Naoki Suetsugu (3 patents)
- Syuzou Ueyama (1 patents)
- Nobuaki Takahashi (175 patents)
US Patent 6192550 · Granted Feb 27, 2001