Assignee
Inventors
- Yoshiro Udagawa (27 patents)
- Masao Suzuki (173 patents)
- Nobuhiro Takeda (99 patents)
- Takao Sasakura (9 patents)
- Ryoji Kubo (17 patents)
- Hideaki Yamaki (3 patents)
- Shingo Tatsumi (10 patents)
- Masato Ikeda (49 patents)
US Patent 6346999 · Granted Feb 12, 2002