Svilen S. Tzonev has been granted 8 US patents while listed as an inventor at Bio-Rad Laboratories. The first was granted in 2014 and the most recent in April 2018. Svilen S. Tzonev ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Svilen S. Tzonev in Pleasanton, CA, US.