4Gallinat Stefan,Venzke Kirsten,Blatt Thomas.Cosmetic or dermatological preparations including hops or hop-malt extracts and methods of using same for the prophylaxis and treatment of skin symptoms[P].US:20050031572,2005.12.10.
5Tagashira Motoyuki,Kanda Tomomasa.Process for producing hop glume polyphenol[P].US:20060251760,2006.11.9.