Pharmaceutical composition comprising refined indigo naturalis extracts and the use… Grant US-11116811-B2 United States of America 14 Sep 2021
Extract from Indigo Naturalis and a process for preparing the same Grant US-10695391-B2 United States of America 30 Jun 2020
Pharmaceutical composition comprising refined Indigo naturalis extracts and the use… Grant US-10555985-B2 United States of America 11 Feb 2020
PHARMACEUTICAL COMPOSITION COMPRISING REFINED INDIGO NATURALIS EXTRACTS AND THE USE… Application US-20190160128-A1 United States of America 30 May 2019