Patents by Inventor Dong Hao

Dong Hao 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).

  • Patent number: 7131495
    Abstract: A method to synthesize a chlorine dioxide block remover in a well is described. The method includes dissolving a chlorate aqueous solution and some acidic substances in water and to produce a hydrogen ion. The chlorate aqueous solution and acidic substances are quickly injected into the well by an injection pump, so they react with each other and produce chlorine dioxide. The synthesis of the chlorine block remover in the well removes oil layer blocks induced by polymers and microbes, while reducing the risk of explosion caused by leaked chlorine dioxide, and reducing the corrosion of equipment and pipes caused by chlorine dioxide.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: November 7, 2006
    Inventors: Zhanyuan Hao, Dong Hao
  • Publication number: 20040224855
    Abstract: A method to synthesize chlorine dioxide blocking remover in an oil well, including: chlorate aqueous solution and some acidic substances that can dissolve in water and produce hydrogen ion are quickly injected into oil wells or water wells by injection pump. So as to make them react each other and produce chlorine dioxide.
    Type: Application
    Filed: November 10, 2003
    Publication date: November 11, 2004
    Inventors: Zhanyuan Hao, Dong Hao