# Evan S. Krygowski — Patents explained on PatentBrief

Evan S. Krygowski has 1 landmark patent explained in plain English on PatentBrief.

- [Chemical Compounds for Treating Hepatitis C Virus](https://patentbrief.org/patent/us/8822430/epclusa-sofosbuvir-velpatasvir) — granted 2014
  A patent describing specific chemical structures designed to stop the Hepatitis C virus from replicating in humans.

**Full profile:** https://patentbrief.org/inventor/evan-s-krygowski

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._