Patents by Inventor Xinmin Song

Xinmin Song 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).

  • Betaine surfactants and preparation methods and uses thereof
    Patent number: 9540559
    Abstract: Betaine surfactants of formula (I) and preparation methods and uses thereof are provided. The surfactant can decrease the interfacial surface tension of crude oil till 10?3 mN/m, have the capabilities of antiheating (130° C.), antimineralizing and antidiluting, and can be used in the field of tertiary oil recovery.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: January 10, 2017
    Assignee: PETROCHINA COMPANY LIMITED
    Inventors: Chunde Liu, Shiyi Yuan, Demin Wang, Xinmin Song
  • BETAINE SURFACTANTS AND PREPARATION METHODS AND USES THEREOF
    Publication number: 20140113842
    Abstract: Betaine surfactants of formula (I) and preparation methods and uses thereof are provided. The surfactant can decrease the interfacial surface tension of crude oil till 10?3 mN/m, have the capabilities of antiheating (130° C.), antimineralizing and antidiluting, and can be used in the field of tertiary oil recovery.
    Type: Application
    Filed: March 11, 2011
    Publication date: April 24, 2014
    Applicant: PetroChina Company Limited
    Inventors: Chunde Liu, Shiyi Yuan, Demin Wang, Xinmin Song