Patents by Inventor Danqing Zhu

Danqing Zhu 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: 8597482
    Abstract: Cleaned metal surfaces are coated with an aqueous anti-corrosion treatment. The anti-corrosion treatment includes an organofunctional silsesquioxane and a fluoro metallic acid such as H2TiF6, H2ZrF6, as well as others and blends. The metal surface can be rinsed immediately after coating, making this anti-corrosion treatment suitable for preparing a metal surface for electrocoating.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: December 3, 2013
    Assignee: ECOSIL Technologies LLC
    Inventors: Danqing Zhu, William J Vanooij, Wenchao Zhang
  • Patent number: 8383204
    Abstract: A method of applying to a clean metal surface an aqueous solution comprised of a small percentage of organofunctional siloxane oligomers. The organofunctional siloxane oligomers used in this method include silsesquioxanes. The organofunctional siloxane oligomers are applied to a metal surface prior to the application of a topcoat and function to inhibit corrosion of the metal surface.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: February 26, 2013
    Assignee: Ecosil Technologies, LLC
    Inventors: Danqing Zhu, William J. Van Ooij
  • Publication number: 20120061248
    Abstract: Cleaned metal surfaces are coated with an aqueous anti-corrosion treatment. The anti-corrosion treatment includes an organofunctional silsesquioxane and a fluoro metallic acid such as H2TiF6, H2ZrF6, as well as others and blends. The metal surface can be rinsed immediately after coating, making this anti-corrosion treatment suitable for preparing a metal surface for electrocoating.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 15, 2012
    Inventors: Danqing Zhu, William J. Vanooij, Wenchao Zhang
  • Patent number: 7994249
    Abstract: A method of treating a substrate, such as a metal surface, by application of a silane coating composition containing at least one water-soluble or dispersible silane and a polymeric resin, which may be provided as a water-based dispersion of polymeric resin, the polymeric resin being present in an amount less than 10% by weight of the composition to slow the rate of corrosion of the metal surface and/or to promote adhesion of rubber thereto. The at least one silane can include a bis-amino silane, a vinyl silane, a bis-sulfur silane, or mixtures thereof and the polymeric resin may include an epoxy resin, acrylate resin, polyurethane resin, novolac resin, or mixtures thereof. The silane coating compositions may be either water or solvent based.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: August 9, 2011
    Assignees: The University Of Cincinnati, ECOSIL Technologies LLC
    Inventors: William J. van Ooij, Karthik Suryanarayanan, Jaspreet Singh Gandhi, Naveen B V Simhadri, Chetan Shivane, Matthew B. Stacy, Danqing Zhu
  • Publication number: 20090264574
    Abstract: A composition capable of coating a substrate and curing to provide a hydrophobic film inhibiting corrosion, the composition comprising: (a) a bis-silane comprising between about 0.5 weight percent to about 50 weight percent of the composition; and (b) a water soluble or dispersible polymer comprising between 10 weight percent to about 80 weight percent of the composition. A further exemplary superprimer in accordance with the instant invention includes a composition capable of coating a substrate and curing to provide a hydrophobic film inhibiting corrosion, the composition comprising: (a) a mixture of silanes; (b) a dispersible or soluble resin; and (c) an aqueous or non-aqueous solvent. Moreover, the invention includes the aforementioned superprimer composition, wherein the mixture of silanes includes at least one of a bis-sulfur silane, a bis-benzene silane, a bis-alkane silane, a bis-alkene silane, and a bis-amino silane.
    Type: Application
    Filed: February 9, 2009
    Publication date: October 22, 2009
    Inventors: Wim Johan Van Ooij, Trilok Mugada, Karthik Suryanarayanan, Anuj Seth, Danqing Zhu, Lin Yang
  • Publication number: 20080118646
    Abstract: A method of applying to a clean metal surface an aqueous solution comprised of a small percentage of organofunctional siloxane oligomers. The organofunctional siloxane oligomers used in this method include silsesquioxanes. The organofunctional siloxane oligomers are applied to a metal surface prior to the application of a topcoat and function to inhibit corrosion of the metal surface.
    Type: Application
    Filed: November 13, 2007
    Publication date: May 22, 2008
    Inventors: Danqing Zhu, William J. Van Ooij
  • Publication number: 20080081120
    Abstract: A composition capable of coating a substrate and curing to provide a hydrophobic film inhibiting corrosion, the composition comprising: (a) a bis-silane comprising between about 0.5 weight percent to about 50 weight percent of the composition; and (b) a water soluble or dispersible polymer comprising between 10 weight percent to about 80 weight percent of the composition. A further exemplary superprimer in accordance with the instant invention includes a composition capable of coating a substrate and curing to provide a hydrophobic film inhibiting corrosion, the composition comprising: (a) a mixture of silanes; (b) a dispersible or soluble resin; and (c) an aqueous or non-aqueous solvent. Moreover, the invention includes the aforementioned superprimer composition, wherein the mixture of silanes includes at least one of a bis-sulfur silane, a bis-benzene silane, a bis-alkane silane, a bis-alkene silane, and a bis-amino silane.
    Type: Application
    Filed: June 21, 2007
    Publication date: April 3, 2008
    Inventors: Wim Van Ooij, Trilok Mugada, Karthik Suryanarayanan, Anuj Seth, Danqing Zhu, Lin Yang
  • Publication number: 20080026151
    Abstract: A coating composition for use on a cleaned but untreated metal surfaces includes a liquid polymerizable coating composition such as a urethane paint, or the like, blended with an organofunctional silane. The organofunctional silane can be a bis-functional monomeric or an oligomeric silane such as a silsesquioxane. The composition can be applied directly to an untreated metal surface. The silane in the coating composition improves adhesion of the coating composition and deters corrosion.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 31, 2008
    Inventors: Danqing Zhu, William Van Ooij
  • Publication number: 20070056469
    Abstract: A method of treating a substrate, such as a metal surface, by application of a silane coating composition containing at least one water-soluble or dispersible silane and a polymeric resin, which may be provided as a water-based dispersion of polymeric resin, the polymeric resin being present in an amount less than 10% by weight of the composition to slow the rate of corrosion of the metal surface and/or to promote adhesion of rubber thereto. The at least one silane can include a bis-amino silane, a vinyl silane, a bis-sulfur silane, or mixtures thereof and the polymeric resin may include an epoxy resin, acrylate resin, polyurethane resin, novolac resin, or mixtures thereof. The silane coating compositions may be either water or solvent based.
    Type: Application
    Filed: March 2, 2006
    Publication date: March 15, 2007
    Inventors: William van Ooij, Karthik Suryanarayanan, Jaspreet Gandhi, Naveen Simhadri, Chetan Shivane, Matthew Stacy, Danqing Zhu
  • Patent number: 6955728
    Abstract: A method of treating a metal surface by application of a solution containing at least one acyloxy silane and at least one basic compound. A composition having at least one acyloxy silane and at least one basic compound is also provided, along with a silane coated metal surface.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: October 18, 2005
    Assignee: University of Cincinnati
    Inventors: Wim J. van Ooij, Danqing Zhu