Patents by Inventor Xinhao H. GAO

Xinhao H. GAO 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).

  • Methods of conferring fire retardancy to wood and fire-retardant wood products
    Patent number: 10500756
    Abstract: A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: December 10, 2019
    Assignee: Koppers Performance Chemicals Inc.
    Inventors: Jun Zhang, John Horton, Xinhao H. Gao
  • Wood treatment for dimensional stabilization
    Patent number: 10442110
    Abstract: A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of contacting a composition comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, with the wood product. The invention also provides wood products comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, that have greater dimensional stability compared to an untreated wood product.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 15, 2019
    Assignee: Koppers Performance Chemicals Inc.
    Inventors: Jun Zhang, Xinhao H. Gao, John Horton, Richard Ziobro
  • WOOD TREATMENT FOR DIMENSIONAL STABILIZATION
    Publication number: 20190126506
    Abstract: A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of contacting a composition comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, with the wood product. The invention also provides wood products comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, that have greater dimensional stability compared to an untreated wood product.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Inventors: Jun Zhang, Xinhao H. Gao, John Horton, Richard Ziobro
  • METHODS OF CONFERRING FIRE RETARDANCY TO WOOD AND FIRE-RETARDANT WOOD PRODUCTS
    Publication number: 20170120473
    Abstract: A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products.
    Type: Application
    Filed: May 27, 2015
    Publication date: May 4, 2017
    Inventors: Jun ZHANG, John HORTON, Xinhao H. GAO