Patents by Inventor Xinngao Fang

Xinngao Fang 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).

  • ALKOXYLATED QUATERNARY AMMONIUM SALTS AND FUELS CONTAINING THEM
    Publication number: 20150096516
    Abstract: A fuel additive and its preparation for a engine, a fuel containing the additive, a fuel additive concentrate, a method for improving performance of fuel injectors and a method for cleaning fuel injectors for an engine. The fuel additive includes a quaternary ammonium salt derived from a reaction of a hydrocarbyl substituted anhydride, a tertiary amine and a hydroxyl-containing epoxide, wherein the tertiary amine is devoid of primary and secondary amino groups.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: Afton Chemical Corporation
    Inventors: Xinngao FANG, Scott D. SCHWAB
  • Alkoxylated quaternary ammonium salts and fuels containing them
    Patent number: 8992636
    Abstract: A fuel additive and its preparation for a engine, a fuel containing the additive, a fuel additive concentrate, a method for improving performance of fuel injectors and a method for cleaning fuel injectors for an engine. The fuel additive includes a quaternary ammonium salt derived from a reaction of a hydrocarbyl substituted anhydride, a tertiary amine and a hydroxyl-containing epoxide, wherein the tertiary amine is devoid of primary and secondary amino groups.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: March 31, 2015
    Assignee: Afton Chemical Corporation
    Inventors: Xinngao Fang, Scott D. Schwab