1. Boiled vegie egg processing technology and boiled vegie egg products (2014). National Office of Intellectual Property, 09/06/2014, Dr Luong Hong Nga, Assoc Prof Bui Đuc Hoi, Prof Hoang Đinh Hoa.
  2. Adjustable tank incorporated five functions for biological treatment of waste water (2011). World Intellectual Property Organization (WO/2011/094768), 04/08/2011. Prof. Nguyen Van Cach.
  3. Fluidization aeration mixing apparatus. World Intellectual Property Organization, Prof. Nguyen Van Cach, (WO/2009/052535), 23/04/2009.
  4. Method for receiving and using beta-glucosidase enzym from Aspergillus niger PBC. National Office of Intellectual Property. Assoc. Prof. Nguyen Thi Xuan Sam, 9/10/2006.