David (Daching) Chen has been granted 3 US patents while listed as an inventor at Dot Wireless. The first was granted in 2001 and the most recent in March 2003. David (Daching) Chen ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David (Daching) Chen in Irvine, CA, US.