Patents by Inventor Disong Zhang

Disong Zhang 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).

  • PROCESS AND SYSTEM FOR RECOVERING BASE OIL FROM LUBRICATION OIL THAT CONTAINS CONTAMINANTS THEREIN
    Publication number: 20110259795
    Abstract: A process of recovering base oil from lubrication oil that contains contaminants therein, the process comprises the steps of: (i) extracting a light diesel fraction from the lubrication oil; and (ii) distilling the lubricating oil under vacuum conditions after said extracting step (i) to obtain a base oil that is substantially free of said contaminants.
    Type: Application
    Filed: November 2, 2009
    Publication date: October 27, 2011
    Applicant: ANNDA ENERGY PTE LTD.
    Inventors: Yingsui Yin, Ming Feng, Thiam Seng Lee, Disong Zhang