Assignee
Inventors
- Kenmei Masuda (23 patents)
- Hidekazu Takeda (28 patents)
- Shigeru Yamazaki (74 patents)
- Akihisa Obata (5 patents)
- Toshio Tsuchiya (30 patents)
- Kenkichi Inada (10 patents)
- Kuniako Hirayama (2 patents)
US Patent 6757123 · Granted Jun 29, 2004