At present, there are three national invention patents in Qing Dynasty, as follows:
Application of ZL 20 15 1 0589245.7 compound powder of sunflower disc hydrolysis in preparing medicine for treating or relieving hyperuricemia gout.
ZL 2020 1 1543850.8 Method for extracting isoquercitrin from sunflower disc and its application in preparation of xanthine oxidase inhibitor.
ZL 2020 1 0409447。 Sunflower disc extract and its medical use in treating constipation.