Sergey Etchin has been granted 4 US patents while listed as an inventor at Trutag Technologies. The first was granted in 2003 and the most recent in January 2019. Sergey Etchin ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Sergey Etchin in Castro Valley, CA, US.