Patents by Inventor Qingshi Tu

Qingshi Tu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD OF EXTRACTING LIPIDS FROM TRAP GREASE WITH WASTE COOKING OIL
    Publication number: 20150225658
    Abstract: Describe are methods of extracting the lipid fraction from trap grease using vegetable oil, such as vegetable oils sourced from waste cooking oil. The method includes mixing a volume of vegetable oil with a volume of trap grease. The mixture is comprised of an aqueous fraction, a solid fraction, and a lipid fraction. The mixture is heated to a temperature in a range from about 50 degrees C. to about 100 degrees C. for a period of time sufficient to extract at least 80 percent of the lipids from the trap grease. The lipid fraction is then separated from the solid fraction. The method may further include a process of producing biodiesel from the extracted lipid fraction.
    Type: Application
    Filed: April 23, 2015
    Publication date: August 13, 2015
    Inventors: Mingming Lu, Jingjing Wang, Qingshi Tu
  • METHOD OF EXTRACTING LIPIDS FROM TRAP GREASE WITH WASTE COOKING OIL
    Publication number: 20130239467
    Abstract: Describe are methods of extracting the lipid fraction from trap grease using vegetable oil, such as vegetable oils sourced from waste cooking oil. The method includes mixing a volume of vegetable oil with a volume of trap grease. The mixture is comprised of an aqueous fraction, a solid fraction, and a lipid fraction. The mixture is heated to a temperature in a range from about 50 degrees C. to about 100 degrees C. for a period of time sufficient to extract at least 80 percent of the lipids from the trap grease. The lipid fraction is then separated from the solid fraction. The method may further include a process of producing biodiesel from the extracted lipid fraction.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Applicant: UNIVERSITY OF CINCINNATI
    Inventors: Mingming Lu, Jingjing Wang, Qingshi Tu