Patents by Inventor Joseph Zhen Hu

Joseph Zhen Hu 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).

  • Deicing and anti-icing composition for aircraft
    Patent number: 5817252
    Abstract: A deicing and anti-icing composition for aircraft surfaces including a base compound being propylene glycol and/or ethylene glycol in the range of 35.0% to 80.0% by weight of the deicing and anti-icing composition. A diluent is included in the form of water for use as a carrier fluid for the glycol. A first molecular weight non-ionic surfactant agent is included having an HLB in the range of 4 to 17, and a second molecular weight non-ionic surfactant agent is included having an HLB in the range of 5 to 18. The second non-ionic surfactant agent has an HLB at least two (2) units higher than the first non-ionic surfactant agent. An emulsifier is included in the form of a polycarboxylate compound being in the range of 1 ppm to 0.5% by weight of the deicing and anti-icing composition. A pH control agent maintains the pH of the deicing and anti-icing composition between a 6 and 10 value.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: October 6, 1998
    Assignee: Octagon Process Inc.
    Inventors: Joseph Zhen Hu, John Wakelin, Arnold Wiesenfeld