Patents

U.S. Patents
6,695,861
7,753,889
7,931,658
7,935,127
8,016,794
8,016,813
8,029,476
8,038,653
8,137,323
8,142,401
8,147,459
8,235,948
8,252,004
8,328,764
8,343,108
8,444,603
8,579,864
 
 
 
European Patents
1539002
2002857