http://www.clinicaltrials.gov/ct2/results?term=Hepatitis+C&recr=Open
I assume you are referring to Polymerase Inhibitors ...
Not Protease Inhibitors ... Protease Inhibitors are used with Ifn.
Search the Clinical Trials as hrsepwrguy suggested ...
A bit dated but still pretty current :
http://hcvdrugs.com/
Follow the link it is to clinicaltrials.gov search page, if you know what drugs you are looking for, use them in your search if not you can just type in hepatitis c and your state and it will pull up all hep c trials in your state.
http://clinicaltrials.gov/ct2/search