Patents by Inventor Dawei Wen

Dawei Wen 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).

  • AUTOMATIC SEPARATION APPARATUS FOR FOUR FRACTIONS OF HEAVY OIL AND SEPARATION METHOD THEREOF
    Publication number: 20230001327
    Abstract: The present disclosure provides an automatic separation apparatus for four fractions of heavy oil and a separation method thereof, wherein the apparatus includes a solvent reservoir tank (1), a separation unit for four fractions of heavy oil (100) and a receiving apparatus (9). The separation unit for four fractions of heavy oil (100) includes: a filter disc (4) having one end in communication with the solvent reservoir tank (1), and the other end in communication with an inlet of a pre-column flow path switching valve (5); a chromatographic column (6) having an inlet in communication with an outlet of the pre-column flow path switching valve (5), and an outlet in communication with an inlet of a post-column flow path switching valve (8). The receiving apparatus is in communication with an outlet of the post-column flow path switching valve (8).
    Type: Application
    Filed: October 26, 2020
    Publication date: January 5, 2023
    Inventors: Qing Cao, Dawei Wen, Shengbao He, Yuan Xiu, Lin Tian, Dingzhong Yang, Jing He, Minna Dou, Fei Chen, Kunhong Liu, Chenchen Li, Huifeng Xue, Jianming Wang