Patents by Inventor Fajie YANG

Fajie YANG 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).

  • PERFLUORO PHOSPHATE-TYPE GAS PIPELINE DRAG-REDUCING AGENT AND METHOD OF PREPARING SAME
    Publication number: 20160305612
    Abstract: The present invention provides a perfluorophosphate-based drag-reducing agent for gas pipelines. Raw materials for the perfluorophosphate-based drag-reducing agent for gas pipelines consist of fatty acid(s), pyridine(s), fluorophosphates(s) and haloalkane(s) in a mass ratio of 2:1:1:1 to 2:3:1:2. A method for preparing the perfluorophosphate-based drag-reducing agent for gas pipelines is also provided. The perfluorophosphate-based drag-reducing agent for gas pipelines is non-toxic and environmentally friendly, has a high drag reduction percentage, a long-lasting effect, good stability and solubility, does not affect the inner surface and coatings of natural gas pipelines or gas quality, and is suitable for on-line atomization and injection.
    Type: Application
    Filed: November 7, 2014
    Publication date: October 20, 2016
    Inventors: Zhiheng ZHANG, Guoping LI, Guangwen LIU, Muyang AI, Haifeng GUO, Weichun CHANG, Xiaodong DAI, Chunman LI, Fajie YANG