1. Aerobic garbage disposal tank. National Office of Intellectual Property, Decision No: 66779/QĐ-SHTT, 12/08/2019. Prof. Nguyen Van Cach, Assoc. Prof. Tran Lien Ha, Nguyen Ha An, Nguyen Ha Ngoc Anh.
  2. 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.
  3. 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.
  4. Fluidization aeration mixing apparatus. World Intellectual Property Organization, Prof. Nguyen Van Cach, (WO/2009/052535), 23/04/2009.
  5. 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.